The tension in a string whirling a stone in a horizontal circle of radius is

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

The tension in a string whirling a stone in a horizontal circle of radius

0.40\,\text{m}

20\,\text{N}

. If the angular speed of the stone is

5\,\text{rad\,s}^{-1}

, calculate the mass of the stone. (a)

10\,\text{kg}

(b)

1.0\,\text{kg}

(c)

2.0\,\text{kg}

(d)

4.0\,\text{kg}