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When a body falls freely under gravity, then the work done by the gravity is ___________

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in Engineering Physics I by (558k points)
When a body falls freely under gravity, then the work done by the gravity is ___________

(a) Positive

(b) Negative

(c) Zero

(d) Infinity

The question was posed to me by my college professor while I was bunking the class.

I need to ask this question from Work, Energy and Power topic in chapter Nature of Physical World of Engineering Physics I

1 Answer

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Best answer
The correct option is (a) Positive

Easiest explanation: If a force acting on a body has a component in the direction of displacement, then the work done by the force is positive. Hence when a body falls freely under the influence of gravity the work done by the gravity is positive.

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