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Physics · WORK, ENERGY AND POWER
हिन्दीA cyclist skidding to a stop experiences a retarding force from the road of \( 250\text{ N} \). If the skidding distance is \( 12\text{ m} \), the work done by the cyclist on the road and the work done by the road on the cycle are respectively:
Correct answer · Option 1
\( 0\text{ J},\ -3000\text{ J} \)
Explanation
The road undergoes no displacement, so work done by the cycle on the road is zero. The road applies a force of \( 250\text{ N} \) opposing the displacement \( 12\text{ m} \), so work done on the cycle is \( F d \cos 180^\circ = -3000\text{ J} \).
