Question
Define no work force with an example. State two factors on which magnitude of work depends.
Answer
A “no work force” refers to a force that does not cause any displacement of an object when applied. This means that the force does not transfer any energy or do any work on the object.
Example: Consider a person pushing against a wall. Despite applying force, the wall does not move, and therefore, no work is done on the wall. The force exerted by the person does not result in any displacement, so no work is performed.
The magnitude of work depends on two factors:
- The magnitude of the force: The greater the magnitude of the force applied to an object, the more work is done.
- Displacement of the object: Work is directly proportional to the distance the object moves in the direction of the force. The larger the displacement, the more work is done.
