Section 14.5 Pendulum Motion 27. A mass on a string of unknown length oscillates as a pendu- lum with a period of 4.00 s. What is the period if a. The mass is doubled? b. The string length is doubled? c. The string length is halved? d. The amplitude is halved? Parts a to d are independent questions, each referring to the ini- tial situation. 28. The mass in a pendulum clock completes one full back-and- forth oscillation in 1.00 s. What is the length of the rod? 29. III A 200 g ball is tied to a string. It is pulled to an angle of 8.00° and released to swing as pendulum. A student with a stopwatch finds that 10 oscillations take 12.0 s. How long is the 37. IIII BIO SO fro are on ele ve for wa str ph a.
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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