A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 rev/s. Calculate the centripetal force
- 164N
- 160N
-
158N
- 172N
The correct answer is: C
Explanation
Ο = 2ΟF = 2Ο Γ 2 = 4Οrad\(^{-1}\)
Centripetal force = mrΟ\(^2\)
β 0.5 Γ 2 Γ (4Ο)\(^2\)
β 157.75N
Approximately = 158N.
There is an explanation video available .