Question

derive expression for the energy of a vibrating string including kinetic energy
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Answer 1

Explanation:

How do you derive the expression for kinetic energy?

Suppose a body of mass m is moving with velocity v. It is brought to rest by applying a retarding force F. Suppose it traverses a distance s before coming to rest. Kinetic energy of body, KE = Work done by retarding force to stop it.

now...

What happens to the total energy E of a vibrating string?

the total energy is conserved, as is always zero.

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