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COMEDK2012PhysicsMotion in One Dimension

The reaction of the floor on an object placed on the floor of an elevator is maximum when elevator

Options

  1. Ais stationary
  2. Baccelerates upwards
  3. Ccable snaps and it falls freely towards the Earth
  4. Daccelerates downwards

Correct answer

B. accelerates upwards

Step-by-step solution

The reaction of the floor on an object placed on the floor of an elevator is maximum, when the elevator accelerates upwards. In this case, normal reaction on it is N=m(g+a) where, m= mass of object, g = gravitational acceleration and a= acceleration of elevator.

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