A student wants to drive a spike into the ground by dropping a large mass onto it

PHYSICS · Subjective · CBSE · Physics · Work and Energy · Work and Energy

Problem

A student wants to drive a spike into the ground by dropping a large mass onto it. If the work done by the spike in being driven into the ground is

420\text{ J}

, calculate the mass required if the mass is dropped from a height of

1.5\text{ m}

. What assumptions have you needed to make?