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Topic: Angular displacement


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  Overview   (Site not responding. Last check: 2007-11-06)
Angular displacement, symbolized by 8, is generally measured in degrees, revolutions (1 revolution = 360°), or radians (1 radian = 1 revolution + 2π, approximately 57.3°).
The direction of this conjugate eye deviation is thus the same as that of the angular reaction of the endolymph, and the angular velocity of the eye deviation is proportional to the pressure exerted by the endolymph on the cupula.
Because the amount of angular deviation of the eye is physically limited, rapid movements of the eye in the direction opposite the compensatory motion are employed to return the eye to its initial position or to advance it to a position from which it can sustain a compensatory sweep for a suitable length of time.
www.spatiald.wpafb.af.mil /Overview.aspx   (11773 words)

  
 Physics & Biomechanics Glossary: Angular Displacement   (Site not responding. Last check: 2007-11-06)
Angular displacement is the angle that a rotating body goes through.
For example, if a skater skates in a circle around the center of the rink, stopping and starting at the same place, his or her angular displacement would be 360 degrees.
Angular displacement is measured in radians (SI units) or degrees or revolutions (English units).
btc.montana.edu /Olympics/physbio/glossary/g02.html   (153 words)

  
 Rotational Quantities
Angular velocity can be considered to be a vector quantity, with direction along the axis of rotation in the right-hand rule sense.
Angular velocity is the rate of change of angular displacement and angular acceleration is the rate of change of angular velocity.
The rotation equations represent a complete set of equations for constant angular acceleration rotations, but in certain types of problems, intermediate results must be calculated before proceeding to the final calculation.
hyperphysics.phy-astr.gsu.edu /hbase/rotq.html   (491 words)

  
 Simplified apparatus for and method of tightening fasteners - Patent 4027530
Angular speed and torque are plotted along the vertical axis and angular displacement is plotted along the horizontal axis.
The analog angular speed signal is sampled in circuit 38 and held for a discrete period of time, and the output therefrom is fed into a conventional, multi-stage analog shift register 40 clocked by incremental angular displacement pulses (.DELTA..theta..sub.1) from encoder 24.
Angular speed measurements may conveniently be obtained from any of a number of well known, conventional devices, and the signals generated by such devices, indicative of the angular speed of rotation, could be used in combination with the control systems disclosed for controlling the tightening system.
www.freepatentsonline.com /4027530.html   (5106 words)

  
 Angular displacement - Wikipedia, the free encyclopedia
Angular displacement of a body is the angle in radians through which a point or line has been rotated in a specified sense about a specified axis.
Angular Displacement is measured in [radians] rather than degrees.
Theta = s / r For example if an object rotates 360 degrees around a circle radius 'r' the angular displacement is given by the distance traveled the circuference which is 2 * Pi * r Divided by the radius in: Theta = (2 * Pi * r) / r which easily simplifies to 2Pi
en.wikipedia.org /wiki/Angular_displacement   (139 words)

  
 Angular Velocity Equation -
The angular velocity vector is defined as the derivative of the angular position as a function of time.
The average angular velocity is equal to the angular displacement divided by the elapsed time (Equation 8.2).
motion, meaning that the angular velocity is constant, and the angular displacement is related to the angular velocity by the equation...
equation.fabca.com /index.php?k=angular-velocity-equation   (1199 words)

  
 Angular displacement   (Site not responding. Last check: 2007-11-06)
Angular displacement of a body is the angle in radian s through which a point or line has been rotated in a specified sense about a specified axis.
Piedra Angular Fotografías, historia, agenda de conciertos, información de contacto, discografía y letras de las canciones.
Gran Angular Programa de reportatges d'actualitat de TVE.
www.serebella.com /encyclopedia/article-Angular_displacement.html   (301 words)

  
 Rotation
Angular displacement is evidently a scalar quantity since one number completely defines it.
Since the angular position as we have defined it is a scalar quantity, so is average the angular velocity, being a scalar divided by another scalar, the difference in time.
The instantaneous angular acceleration, a, which is the change in instantaneous angular velocity divided by the time for that change, is of course a vector in the same direction whose magnitude is the limit of Dw/Dt as the change in time approaches zero.
www.mcasco.com /p1rot.html   (2736 words)

  
 Angular Displacement
Angular displacement is the measure of complete and fractional cycle counts between two points on a cycle.
As a count of standard cycles is time, and a count of standard segments is angular displacement, angular displacement is basically time multiplied by the number of segments per cycle.
Fundamentally, angular displacements are ratios of aggregates of loops.
home.earthlink.net /~tdp/angdisp.html   (961 words)

  
 Scientific Paper   (Site not responding. Last check: 2007-11-06)
The angular displacement increased and decreased between frames, and it ranged from —18 degrees at frame eleven to 19 degrees at frame four.
Due to the decreasing size of the shoulder angle the angular displacement was negative which in turn made the angular velocity negative showing the direction of the club.
The angular velocity also fluctuates from positive to negative numbers at a few frames according to the angular displacement, which shows the inconsistency of the angle at her elbow joint.
www.cord.edu /homepages/rmsplich/scipap.html   (3207 words)

  
 Combined angular displacement measuring system and multiplier - Patent 4085375
A combined angular displacement measuring and multiplier system is provided which finds particular application in heading reference units for navigational purposes, but which has general utility, as will become apparent as the description proceeds.
If an output signal is required which is the product of the angular displacement of the sensor and another independent external signal, the sensor is implemented in accordance with the teaching of the present invention so that its output is automatically a representation of its angular displacement multiplied by the external signal.
Thus, for a given alternating current excitation signal, and a given angular displacement, an alternating current signal of a particular amplitude is generated.
www.freepatentsonline.com /4085375.html   (2747 words)

  
 Pressure/Density Level Instrumentation   (Site not responding. Last check: 2007-11-06)
Displacers are force balance devices (restrained floats), whose apparent weight varies in accordance with Archimedes' principle: the buoyant force acting on an object equals the weight of the fluid displaced.
Displacer switches are available with heavy-duty cages and flanges for applications up to 5000 psig at 150°C (300°F), suitable for use on hydraulic accumulators, natural gas receivers, high pressure scrubbers, and hydrocarbon flash tanks.
Displacer diameter can be changed to match the difference in liquid densities, and displacer length can be set to match the vertical range of the level interface variation.
www.omega.com /literature/transactions/volume4/T9904-12-PRESS.html   (4948 words)

  
 notes1
Displacement is the relative in length of the COG from initial to final position (vector = magnitude and direction(velocity, acceleration))
The angular distance through which a rotating body moves is the angle between its initial and final position measured following the path followed by the body.
The angular displacement through which a rotating body moves is equal to the smaller of the two angles between its initial and final position (difference in initial and final position).
www.umsl.edu /~physed/notes1.html   (741 words)

  
 Viscoelastic Dynamics of Actin Filaments Coupled to Rotary F-ATPase: Angular Torque Profile of the Enzyme -- Pänke ...   (Site not responding. Last check: 2007-11-06)
The angular progression of rotating filaments was usually rather nonuniform, evidently due to interaction with the surface.
The average angular velocity calculated for the shown segment of the trajectory (1800 video frames) was 0.25 revolution/s; the respective torque as calculated by Eq.
It represents an idealized angular dependence of the torque under the assumption of a threefold symmetry of the torque generator.
www.biophysj.org /cgi/content/full/81/3/1220   (7153 words)

  
 Rotating Reference Frame
In other words, the displacement due to rotation about an axis of rotation is equal to the cross product of the angular displacement vector and the position vector.
Rather, dr' is the displacement of point P observed in the rotating frame and is in fact the displacement of point P relative to the rotating frame.
that is, the angular acceleration observed in the fixed frame is equal to that observed in the rotating frame of the body.
kwon3d.com /theory/rotsys/rotfrm.html   (481 words)

  
 KX_ObjectActuator.KX_ObjectActuator   (Site not responding. Last check: 2007-11-06)
The object actuator ("Motion Actuator") applies force, torque, displacement, angular displacement, velocity, or angular velocity to an object.
Since the displacement is applied every frame, you must adjust the displacement based on the frame rate, or you game experience will depend on the player's computer speed.
True: the angular displacement vector is applied in local coordinates.
www.blender3d.org /documentation/pydoc_gameengine/PyDoc-Gameengine-2.34/KX_ObjectActuator.KX_ObjectActuator-class.html   (581 words)

  
 Angular displacement sensors (US5086785)
A sensor for detecting angular displacement of an object.
The sensor comprises a substrate for attachment to the object whose angular displacement is to be sensed and a sensing means attached to the substrate and connectable into an electric circuit.
a substrate for attachment to the object whose angular displacement is to be sensed;
www.delphion.com /details?pn=US05086785__   (156 words)

  
 Biomechanics, Linear and Angular Kinematics and Kinetics
Displacement, velocity and acceleration which require magnitude and direction are known as vectors.
When a rotating body moves from one position to another the angular distance through which it moves is equal to the length of the angular path.
The angular displacement that a rotating body experiences is equal in magnitude to the angle between the initial and final position of the body.
www.brianmac.demon.co.uk /biomechanics.htm   (1439 words)

  
 Angular velocity
The instantaneous angular velocity at a point A is then defined to be the average angular velocity between A and a point B as the point B approaches A:
Angular velocity is measured in radians / second, although for motors in particular it is commonly expressed in rpm (revolutions per minute).
Given that tires have a radius of about half a meter, we can figure out the angular velocity of the tires, either in revolutions per second or radians per second.
theory.uwinnipeg.ca /mod_tech/node45.html   (320 words)

  
 BatSpeed.com_Baseball and Softball Swing Hitting Mechanics
In order to understand the mechanics of how rotational energy, developed by the body, is transferred to develop bat speed, it is important to have a good comprehension of the forces acting on the bat that can effect its rate of angular displacement (bat speed).
The bat will undergo angular displacement when the path of the hands is also undergoing angular displacement ("Test the 'Crack of the Whip' Theory").
The concept that a substantial portion of a good hitter's bat speed is derived from the circular path of his hands may be better understood if we think of swinging a ball on the end of a string.
www.batspeed.com /research10.html   (467 words)

  
 Moment of Inertia and Angular Momentum   (Site not responding. Last check: 2007-11-06)
Note that although the angular velocity must be expressed in radians/sec, the term radian is dropped when expressing the units for its angular momentum.
All points on the platform share the same angular velocity (they all pass through the same angular displacement in a stated interval of time), but each one has a unique linear, or tangential, velocity based on how far it is located from the axis of rotation....
That is, the angular momentum of a point mass equals the product of the magnitude of its linear momentum times its moment arm - the perpendicular distance from the line of action of the momentum (instantaneous velocity vector) to the central pivot or axis of rotation.
online.cctt.org /physicslab/content/PhyAPB/lessonnotes/angularmomentum/lessonangularmomentum.asp   (1064 words)

  
 Torque and horsepressure relationship   (Site not responding. Last check: 2007-11-06)
Angular displacement can be how many degrees the rear wheel or crank shaft rotates depending on where you make the measurement.
angular displacement per unit time can be expressed as rpm.
For wing-nuts angular velocity (rpm) is the time derivative of angular displacment.
www.digest.net /bmw/archive/v7/msg00052.html   (177 words)

  
 The Flight Trace III: Combined Evaluation   (Site not responding. Last check: 2007-11-06)
As another measure of spike dynamics the angular displacement during each detected spike is calculated by the distance between two position-data points in degrees, the corresponding torque values of which denote the duration of the spike (Fig.
As a quantitative measure for the subjective impression of sudden arena rotations accounted for by spikes, the sum of angular displacements during spikes is compared to the sum of interspike displacement for each 2 min.
A subjective test for spike detection efficiency was performed with five members of the lab, only one of whom was familiar with Drosophila's body saccades: they were presented with the task to count the number of spikes in the torque traces of four deliberately chosen flies.
www.brembs.net /diploma/f_trace3.html   (220 words)

  
 BC Education - Application of Physics 11 and 12
Ask each group to determine the angular velocity of the flywheel by using a stroboscope to "freeze" a radial line etched on the wheel.
Construct a rough angular scale and tape or glue it to one end of a cylindrical drum.
Ask students to analyse and report on the differences in angular velocity and acceleration of the front wheel, rear wheel, sprocket gears, and wheel gears of a bicycle.
www.bced.gov.bc.ca /irp/apph1112/11rarms.htm   (614 words)

  
 Bat Speed -- Baseball Hitting Forum
Therefore, the principle that produces angular displacement of the bat-head is very different than the principle that accelerates the whip’s tippet.
As I have pointed out many times, the “Crack of the Whip” principle is not applicable to the angular displacement of the bat-head.
The greater the angular displacement rate of the hands, the greater the bat speed generated.
www.batspeed.com /messageboard/output/19198.html   (1607 words)

  
 The Biomechanics of Skating: Conservation of Angular Momentum   (Site not responding. Last check: 2007-11-06)
For example, it is important to understand the concepts of force, angular displacement, angular velocity, and momentum to fully comprehend the analysis of the figure skating jumps and spins.
The objectives of this unit is to use example from figure skating to become familiar with the concept of conservation of angular momentum, to be able to solve basic angular momentum problems, and to learn great examples from figure skating for teaching the conservation of angular momentum to your students.
Conservation of angular momentum is the principle that the angular momentum of an object remains constant as long as no external torque, or moment, acts on that object.
btc.montana.edu /olympics/physbio/biomechanics/cam-intro.html   (343 words)

  
 EXSS 323 Angular Kinematics Lab
To determine the angular position for each of the 11 positions, use the hip marker as an estimation of the center of mass position.
The displacement in the 2nd quadrant is 180° minus the angle with the vertical; in the 3rd quadrant (lower left), the displacement is 180° + the angle.
Finally, in the 4th quadrant (upper left), the angle with the vertical is formed with the 360° axis; the displacement is 360° minus the angle.
osu.orst.edu /instruct/exss323/Angular_Kinematics_Lab/indexa.htm   (701 words)

  
 Strength of Materials LAB 6   (Site not responding. Last check: 2007-11-06)
The test gage length of each specimen is between B and C. Two plexiglas protractors with scales in degrees are attached to the specimen at B and C. The length of the test section between B and C should be measured and recorded in the data table.
For each specimen, place the loads in the weight pan in one pound increments and record the corresponding angle of twist in degrees at protractors B and C. Calculate the torques, convert the angular displacements from degrees to radians and complete the table of Computed Data.
Plot one graph of torque (in-lb) versus angular displacement (radians) for both the solid rod and the hollow tube.
web.usna.navy.mil /~alwan/lab4/lab4.html   (488 words)

  
 On the Relationship Between Joint Angular Velocity and Motor Cortical Discharge During Reaching -- Reina et al. 85 (6): ...   (Site not responding. Last check: 2007-11-06)
The average joint angular velocities of the arm were also used to predict the discharge rate of each cortical unit.
The solid line is the actual angular velocity, and the dashed line is the angular velocity predicted using the Jacobian matrix that was calculated at the initial arm position.
Population vector predictions for the angular velocities of (A) shoulder flexion/extension and (B) shoulder adduction/abduction.
jn.physiology.org /cgi/content/full/85/6/2576   (7589 words)

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