A body is whirled in a horizontal circle of radius 20 cm. It has angular velocity of 10 rad/s. What is its linear velocity at any point an circular path?
A) 10 m/s
B) 2 m/s
C) 20 m/s
D) \[\sqrt{2}\] m/s
Correct Answer:
A
Solution :
Linear velocity, \[v=r\omega \] \[=20\times 10\,cm/s\] \[v=2\text{ }m/s\]