Question

When is the work done by a force said to be negative? Give one situation in which one of the forces acting on the object is doing positive work and the other is doing negative work?

Answer 1

Explanation:

The work done is said to be negative when force is applied opposite to the direction of motion of the object.

For example: The force of friction acts opposite to the direction of motion of football, so the work done is negative in this case.

Hope it helps you!

Answer 2

Answer:

EXAMPLE - Work done in pulling a bucket of water from the well is. Work done by gravitational force on a bucket of water being pulled upwards is negative work. when leela lifts a book, the force exerted by leela is in the direction of the movement of the book. thus,positive work is said to be done.