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Question

The potential energy of a particle of mass 10g varies as its displacement from its mean position given by U=3x2+3, then, the particle performs a
  1. SHM with time period T=π s
  2. Linear motion
  3. SHM with time period T=π56 s
  4. SHM with time period T=π/5 s

A
Linear motion
B
SHM with time period T=π s
C
SHM with time period T=π56 s
D
SHM with time period T=π/5 s
Solution
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The force acting on the system is F=dU/dx=6xa=(6/0.01)x=600x. The angular velocity of the particle is ω=600

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