Physics

Problem

A ball attached to a string moves uniformly in a horizontal circle of radius

0.50\,\text{m}

, completing

2

revolutions every second. What is its speed? a)

12.6\,\text{m/s}

25.1\,\text{m/s}

6.3\,\text{m/s}

3.1\,\text{m/s}