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)

Explanation:

2πf. f=50rev/min

=50/60rev/sec

=5/6rev/sec

2×3.142×5/6

=5.236

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