Question

A 2.6 kg object is tied to the end of a cord and whirled in a horizontal circle of radius 3.3 m completing one revolution in 7 seconds. Determine the velocity of the object to one decimal place.

Answer 1

$$v=\dfrac{2\pi R}{T}=\dfrac{2\pi·3.3}{7}=3.0\text{ m/s}.$$