A ball of mass is thrown vertically upwards by applying a force by hand. If the hand moves while applying the force and the ball goes up to height further, find the magnitude of the force. (take, )
Step 1: Given data
Given, mass of a ball,
Total height of a ball,
Here,
Total height attained by a ball,
Let force applied
Distance for which force is applied,
Step 2: Calculating the magnitude of force
Now we know that work done by a force is equal to potential energy. Hence,
So the force applied on a ball is equal to .
Hence, option(D) is correct answer.