I 9) A pendulum is displaced 20° and left to swing. An identical pendulum is displaced 40° and left to swing. Which of the following statements are true? a) The pendulum displaced to 40° will traveling faster completing a period of oscillation faster. b) Both pendulums experience the same amount of restoring force and thus have the same period. c) The pendulum displaced to 20° will have a higher frequency because it has less distance to travel. d) The pendulum displaced to 40° travels faster because it has more restoring force.
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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