Question

A ball having a mass of 0.60 kg is attached to the end of a cord 1.2m long. The ball is swung horizontally in a circular path with a speed of 6.0m/s. What is the force in Newton’s which the string exerts on the ball?

Answer 1

$$F=\frac{mv^2}{r}$$

$$F=\frac{(0.6)(6)^2}{1.2}=18\ N$$