Question

a particle makers 240 revolution per minute on a circular radius of 2cm find
i. its period
ii. its angular velocity
iii. its linear velocity
iv. its acceleration

Answer 1

The diameter of the circle is irrelevant, as period (a measurement of time) doesn't need distance (a measure of length). To calculate frequency:

F=Rt

We should convert to SI units (the second)

1min=60s

F=240 revolutions60s

F=2Hz

So the frequency is 2Hz. The period is the inverse of the frequency:

P=1/F

P=1/2Hz

P=0.5s