A playground merry-go-round makes revolutions per second

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

Problem

A playground merry-go-round makes

0.40

revolutions per second. What is the magnitude of the linear speed of a child standing

2.5\,\text{m}

from the center? (a)

3.1\,\text{m}\!/\!\text{s}

(b)

12.6\,\text{m}\!/\!\text{s}

(c)

6.3\,\text{m}\!/\!\text{s}

(d)

1.0\,\text{m}\!/\!\text{s}