Question

A thread is being pulled off a spool at the rate of 59.4 cm per sec. Find the radius of the spool if it makes 152 revolutions per min.

Answer 1

\[r=\left(\left.\frac{\frac{594}{10}60}{152}\right/\pi \right)\frac{1}{2}=\frac{891}{76 \pi }=3.73176 \text{ cm} \]