Physics

Problem

A small stone tied to a string moves in a horizontal circle of radius

0.20\,\text{m}

with a linear speed of

5.0\,\text{m}\,\text{s}^{-1}

. Determine the frequency of revolution of the stone.

Intuitive explanation

Circular motion connects linear speed to how often the object completes a full loop—that's where frequency comes in. The key insight is that frequency (revolutions per second) depends on how far the stone travels in one complete circle. Since you know the radius, you can find the circumference, then use the relationship between distance, speed, and time to find how many loops happen each second.

Intuitive explanation

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