Question

Is it possible that an object is in a state of accelerated motion due to an external force acting on it, but no work is being done by the force? Explain it with an example.

Answer 1

Circular motion:

1. Accelerated motion is defined as a body moving in a circular pattern. If an object moves in such a way that its distance from the center point remains constant, it is said to be circular.
2. The body's speed during the motion can vary or remain constant during the entire motion. However, because the motion's orientation changes at each point in the circle, its velocity and direction will change.
3. When there is a force applied to the object it causes the object to move and work is done by the force.
4. If the object is not moved by the applied force then no work is done.

Example:

1. When force and displacement are perpendicular then the work done is said to be zero.
2. Consider the Earth's orbit around the Sun. The Earth is always traveling in a circular route that is perpendicular to the Sun's gravitational attraction. As a result, the gravitational pull does not work.
3. As a result, the work done by an accelerating body can be zero.

Yes, an object can be in a state of accelerated motion due to an external force acting on it, but no work is being done by the force.