Dr. Chaos uses his watch to hypnotize unsuspecting citizens in attempting to rob them. His watch is a simple pendulum that he sets into simple harmonic motion. The length of the pendulum is 0.170 m, and the mass at the end is 2.85 kg. Use the equations below to model the motion of the watch when it is pulled back to a maximum angle of 4.00° and released. s(f) Smax Cos(@smpt + p) M) = -Vmax sin(@smpt + P) = -amax Cos(@smpt + P) a(t) Assume the initial phase is zero. What are the following attributes of the watch? (a) period of motion (b) maximum speed m/s (c) maximum acceleration m/s?
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.
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