Question

A weight lifter lifts a mass m at constant speed to a height h in time t. How much work is done by the weight lifter?

Answer 1

The total work is done by the weight lifter who lifts a mass m at constant speed to a height h in time t, is (mgh)/t.

What is work done to lift an object?

The amount of energy which is required to lift a object at a height is known as the work done of lifting an object.

The work done to lift an object for a time period of t is given as,

$W=\dfrac{mgh}{t}$

Here, (m) is the mass of the object, (g) is the acceleration due to gravity and (h) is the height.

It is given that a weight lifter lifts a mass m at constant speed to a height h in time t. Thus, the work done by the weight lifter is,

$W=\dfrac{mgh}{t}$

Hence, the total work is done by the weight lifter who lifts a mass m at constant speed to a height h in time t, is (mgh)/t.

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