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A hammer of mass 100 kg falls 4 metres on to a pile of mass 300 kg and drives it 80 mm into the ground.
A hammer of mass 100 kg falls 4 metres on to a pile of mass 300 kg and drives it 80 mm into the ground. Using the principle of conservation of Energy:
- Calculate the kinetic energy of the hammer on impact.
- Calculate the initial velocity of the pile stating any assumptions.
- Calculate the work done by the ground and comment on the result.
- Calculate the average resistance to penetration of the ground.
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