Calculate the linear speed at the rim of a grinding wheel of radius rotating at

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

Problem

Calculate the linear speed at the rim of a grinding wheel of radius

10\,\text{cm}

rotating at

1200\,\text{rev}\,\text{min}^{-1}

. Give your answer to the nearest

0.1\,\text{m\,s}^{-1}

. (a)

6.3\,\text{m\,s}^{-1}

(b)

25.1\,\text{m\,s}^{-1}

(c)

12.6\,\text{m\,s}^{-1}

(d)

1.26\,\text{m\,s}^{-1}