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AP EAMCET201726 Apr 2017Morning ShiftPhysicsMotion in One DimensionActual

A person of 60 ~kg mass is in a lift which is coming down such that the man exerts a force of 150 ~N on the floor of the lift. Then the acceleration of the lift is (g=10 ~ms ⁻² )

Options

  1. A7.5 ~ms ⁻²
  2. B40.0 ~ms ⁻²
  3. C22.5 ~ms ⁻²
  4. D15.0 ~ms ⁻²

Correct answer

A. 7.5 ~ms ⁻²

Step-by-step solution

Here g_ e f f =g-a So, m(g-a)=150 ~N 60(10-a)=150a=7.5 ~m / s ^2

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