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NEST2019PhysicsCenter of Mass, Momentum and Collision

A particle of charge Q moves with speed v directly towards another particle of charge Q^ which is connected to a light spring. The far end of the spring is fixed to a smooth horizontal table. Let P and E be the total momentum and energy of the charge-spring system respectively. Ignore gravity. Then,

Options

  1. AE is conserved but not P .
  2. Bneither P nor E is conserved.
  3. Cboth P and E are conserved.
  4. DP is conserved but not E .

Correct answer

A. E is conserved but not P .

Step-by-step solution

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