The work done by gravitational force on the earth can be positive or negative,Why!?? (At a instant)

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Solution

The Work done by gravity formula is given by,

Wg = -mg(∆ h)

here negative sign indicates

The negative sign shows that the particle is dropping from a height Δ h vertically in the direction of gravity.

Well the negative sign that is coming indicates the direction

So the work done can be negative and positive depending upon the direction

Learn more about the topic at
https://byjus.com/work-done-by-gravity-formula

Thats all
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