Physics for IGCSE & O level - Forces And Motion (Section 10 - No. 21)
What happens to the magnitude of the centripetal force if the radius of the circular path is halved, assuming constant speed and mass?
It doubles.
It halves.
It quadruples.
It remains the same.
Explanation
Centripetal force is inversely proportional to the radius. If the radius is halved, the force doubles.
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