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MHT CET202013 Oct 2020Evening ShiftPhysicsLaws of MotionActual

A Diwali cracker releases 25 gram gas per second, with a speed of 400 ~ms ⁻¹ after explosion. The force exerted by gas on the cracker is

Options

  1. A100 dyne
  2. B16 newton
  3. C10 newton
  4. D10,000 dyne

Correct answer

C. 10 newton

Step-by-step solution

F = rate of change of momentum =25 10⁻³ ~kg / s 400 ~m / s =10 ~N

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