Question

A body of weight 5 kg falls from a height of 100 m comes to rest after penetrating Im in the ground.
What is the average resistance offered by the ground?​

Answer 1

Answer:

Average resistance offered by the ground = 4949 joules.

Explanation:

Resistance offered by the ground is the energy dissipated during the fall from the height of 100 m to penetrating 1 m in the ground.

Since total height = 101 m.

weight of the body = 5 kg.

assuming the acceleration due to  gravity is = 9.8 m/sec^2

So, resistance offered = potential energy of the body = mgh

                                     = 5 x 9.8 x 101

                                     = 4949 joules.

Average resistance offered by the ground = 4949 joules.