Work Done in Uniform Circular Motion – Rankers Physics

Dynamics of Circular Motion: Practice Problem & Solution

When a body moves with a constant speed along a circle: (1994)
No work is done on it
No acceleration is produced in it
Its velocity remains constant
No force acts on it

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Dynamics of Circular Motion. Understanding the underlying formula is key to arriving at the correct answer below:

In uniform circular motion, the centripetal force is always perpendicular to the instantaneous displacement. Work \(W = F.d cos\theta\). Since \(\theta = 90^{\circ}\), \(cos\theta = 0\). Therefore, \(W = 0\).

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