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Questions  

What happens to the energy of a particle, in SHM, with time in the presence of damping forces?

a
Stays constant
b
Decreases linearly
c
Decreases exponentially
d
Decreases cubically

detailed solution

Correct option is C

Energy in presence of damping forces is given by: 1/2kA2e-bt/m. This shows that kinetic energy decreases exponentially with time.

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