A 4.0 kg mass is moving in a circular path of radius 2.5 m with a constant linear speed of 5.0 m/s. The magnitude of the radial force on the mass is
A) 20 N.
B) 25 N.
C) 35 N.
D) 40 N.
E) 45 N.

Question

Quizplus · Accepted Answer

The radial force (centripetal force) is calculated using the formula $ F = \frac{mv^2}{r} $. Substituting the given values: $ F = \frac{4.0 \, \text{kg} \times (5.0 \, \text{m/s})^2}{2.5 \, \text{m}} = 40 \, \text{N} $.

A 40 Kg Mass Is Moving in a Circular Path of of Radius