Question

Work done by the force of gravity is same whether the body comes down from a certain height using stairs or slope or a lift. *​

Answer 1

Answer:

True

Explanation: As the h in the formula u=mgh remains same whether you come  from lift, slope, or stairs.

Answer 2

The statement is true .

But how ?

• First of all, work done by gravitational force is not path dependent. It only depends upon the position of the object with respect to the reference (i.e. displacement).

• So, irrespective of the path followed by the object, the work done by gravity will be same in all cases provided that the initial and final position are constant for all cases.

• In other words, when the initial and final position remain constant, the displacement also becomes constant irrespective of the path followed (whether slope, stairs or lift).

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