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NEET2008PhysicsCenter of Mass, Momentum and CollisionActual

Sand is being dropped on a conveyor belt at the rate of M ~kg / s . The force necessary to keep the belt moving with a constant velocity of v ~m / s will be

Options

  1. AM v newton
  2. B2 M v newton
  3. CM v 2 newton
  4. Dzero

Correct answer

A. M v newton

Step-by-step solution

Force required, aligned F & = d(m v) d t & =v ( d m d t )=v M aligned as velocity v is constant, hence F=M v newton

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