Questions
A body of mass 1kg is dropped from a height of 5m on to the ground.If the body penetrates 2cm in to the ground, the average resistance offered by the ground on to the body is (g = 10ms–2)
detailed solution
Correct option is A
Just before the body touches the ground, its kinetic energy . when the body is penetrating the ground, net downward force acting on the body = (mg - R). By work-energy TheoremTalk to our academic expert!
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