Q.
What happens to the energy of a particle, in SHM, with time in the presence of damping forces?
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a
Stays constant
b
Decreases linearly
c
Decreases exponentially
d
Decreases cubically
answer is C.
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Detailed Solution
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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