COMEDK · Physics · 6. Work Power Energy
When a body moves in a circular path, no work is done by the force since
- A there is no displacement
- B there is no net force
- C force and displacement are perpendicular to each other
- D the force is always away from the centre
Answer & Solution
Correct Answer
(C) force and displacement are perpendicular to each other
Step-by-step Solution
Detailed explanation
The work done by a force in moving a body is \[ W=\underline{F} \cdot \mathbf{S} \] where, \(s\) is the displacement vector. In circular path, the force is centripetal, thus always acting towards the centre along the radial direction. However, the displacement is always along…
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