S4. At a party, you notice a disco ball (a hollow sphere of mass 0.50 kg and radius 15 cm) attached to a thin rod of mass 1.0 kg and length 0.75 m. The disco ball has come loose and is oscillating about a pivot at the top of the rod in a vertical plane as shown. You time the number of oscillations per second and find this frequency is closest to: lo atziznoo mworz malay2 9dT 12 arit no noltant simil a sor smuzzA .gl 2 E 226m bris m 2 Pivot uibst diw dzib biloz & To sqariz srit A) 0.82 Hz 16 biswqu 91699506 01 2niged 11 b926918 xbol8 nsrW velluq edit to sixs B) 0.62 Hz C) 0.58 Hz D) 0.71 Hz E) 0.74 Hz $2\m T.E (A $2\m 5.S (8 S (0
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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