Question

Bob of a simple pendulum have diameter 2 cm and effective length is 1.5 m calculate the length of the string please help me
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Answer 1

Explanation:

In Figure 1 we see that a simple pendulum has a small-diameter bob and a string that has a very small mass but is strong enough not to stretch appreciably. The linear displacement from equilibrium is s, the length of the arc. Also shown are the forces on the bob, which result in a net force of −mg sinθ toward the equilibrium position—that is, a restoring force.