A hammer in an athletics event is whirled in a horizontal circle of radius

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

Problem

0.8\,\text{m}

. It completes

50

revolutions in

25\,\text{s}

. What is the speed of the hammer? (a)

5\text{ m/s}

(b)

20\text{ m/s}

(c)

10\text{ m/s}

(d)

12.6\text{ m/s}