Answer
(a) Please refer to the free-body diagram.
(b) The maximum speed is 8.2 m/s.
Work Step by Step
(a) Please refer to the free-body diagram.
(b) $F = \frac{mv^2}{r}$
$v = \sqrt{\frac{Fr}{m}} = \sqrt{\frac{(60.0~N)(0.90~m)}{0.80~kg}}$
$v = 8.2~m/s$
The maximum speed is 8.2 m/s.
