Question

What is negative work? give two examples
two marks question​

Answer 1

Answer:

NEGATIVE WORK: The work done is said to be negative work when force and displacement are in opposite direction.

Example: When an object is thrown upwards,the force of gravity is in downward direction whereas displacement acts in upward direction.

Answer 2

Answer:

Negative work follows when the force has a component opposite or against the displacement. Negative work removes or dissipates energy from the system.

Two examples:

1)In pulling a box of books along a rough floor at constant velocity, I do positive work on the box, that is I put energy into the system.

2)Work was done the gravity on a rocket going perpendicular upwards.

Hope this will help you