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MHT CET202015 Oct 2020Morning ShiftPhysicsMotion in One DimensionActual

A body of mass 5 ~kg is moving in a straight line. The relation between its displacement and time is x = ( t ³-2 t -10 ) m . What is the force acting on it at the end of 5 second?

Options

  1. A150 ~N
  2. B120 ~N
  3. C80 ~N
  4. D100 ~N

Correct answer

A. 150 ~N

Step-by-step solution

A body of mass rig, array l m=5 k g x= (t³-2 t-10 ) m array F after t=5 sec , array l d x d t =v=3 t²-2 d v d t =a=6 t F=m a=5 6 t=30 5 F=150 ~N array

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