disc with a radius of 50 cm rotates on itself. At t=0, it rotates at 0.5 rad/s counterclockwise. At t=20s, it rotates at 2.5 rad/s counterclockwise. (Its angular acceleration is constant.) The P particle is located on the edge of the disk and the Q particle is located halfway between the center of the disc (axis of rotation) and the edge. (a) How many revolutions did the disk make between t=0 and t=20s? (b) Calculate the angular
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
A disc with a radius of 50 cm rotates on itself. At t=0, it rotates at 0.5 rad/s counterclockwise. At t=20s, it rotates at 2.5 rad/s counterclockwise. (Its
(a) How many revolutions did the disk make between t=0 and t=20s?
(b) Calculate the
(c) Calculate the linear velocities of the P and Q particles at t=4s.
(d) Calculate the moduli of the resulting accelerations of the P and Q particles at t=4s.
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