Question

A man of mass m kg stands on a weighing machine in a lift .What would be the reading on the scale if the lift is moving up with an acceleration of a ms^-2 ?

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Answer 1

Given:

Mass of the man standing on the weighing machine = m kg

The acceleration of the lift in the upward direction = a m/s^2

To find:

The reading of the scale of the weighing machine.

Solution :

When the lift is moving upwards with an acceleration of a m/s^2 then using the Newton's laws of motion, the equation of force is given as:

N + mg = ma

N = ma - mg

N = m(g-a) Newton

The reading on the scale will be m(g-a) Newton.

Answer 2

Answer:

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