Question

A 4 kg mass is moving in a circular path of radius 2.5 m with a constant speed of 5 m/s.
The centripetal force on the mass is ?

Answer 1

Answer on Question #40921, Physics, Mechanics | Kinamatics | Dynamics

Question:

A 4 kg mass is moving in a circular path of radius 2.5 m with a constant speed of 5 m/s. The centripetal force on the mass is?

Answer:

The magnitude of the centripetal force on an object of mass m moving at tangential speed v along a path with radius of curvature r is:

$$F = \frac{m v^2}{r} = 4 \cdot \frac{5^2}{2.5} = 40 \, N$$

Answer: 40 N