Question

Explain how energy is conserved in a simple pendulum.

Answer 1

At extreme position kinetic energy is zero and potential energy is = mgh and at mean position kinetic energy is = mgh and potential energy is equal to zero

Answer 2

The energy is conserved in a simple pendulum as when pendulum is at initial position it's kinetic energy is 0 and potential energy is mgh and when it reaches at final position then it's kinetic energy= work done is mgh and potential energy is 0, so,

mgh+0= mgh+0
= constant

so energy is conserved.

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