Question

A phonograph turn table 50 revolution /minutes. its angular speed in rad/s is a)8.164rads-1 b)5.23rads-1 c)52.3rads-1 d)81.64rads-1​

Answer 1

Answer:

(b) 5.23 radians/second

Explanation:

$50 \: revs \: per \: minute=50 \times 2\pi \: radians \: per \: minute = \frac{100\pi}{60} radians \: per \: second = \frac{5\pi}{3} = 5.23 \: radians \: per \: second$

Answer 2

A phonograph turn table 50 revolution/minutes. It's angular speed in rad/s is

a) 8.164rads-1

b) 5.23rads-1 ✔️✔️

c) 52.3rads-1

d) 81.64rads-1