Question

A ball of mass 1.200 kg is attached to a 0.700 m long string. It is moving horizontally in a clockwise direction, 4.000 m above ground, with a speed of 20.00 m/s. The centripetal acceleration of the ball is:

Answer 1

Answer:

The ball is making a circular motion. The centripetal acceleration in a circular motion is

$a = \frac{v^2}{r}$

$a = \frac{20^2}{0.7} = \frac{400}{0.7} = 571.4~ m/s^2$~

Explanation:

Normally in physics questions like this, we use all the information in the question. Here, we left out the mass or the height of the object. I assume there is more sub-questions that is not shared here. However, the centripetal acceleration can be found by using the velocity and the radius only.