Help with a physics question.Watch
Assuming that the pile driver remains in contact with the pile after impact and that momentum is conserved, use the principle of conservation of energy to calculate:
- a. The kinetic energy of the driver and pile combination immediately after impact.
- b. The change in potential energy of the driver and pile combination on moving into the ground.
- c. The average ******ing force that brings the pile and driver to rest, ensuring use of the principle of conservation of energy.
- d.Using D’Alembert’s principle, solve the same problem
e.Compare and contrast the use of the ‘principle of conservation of energy’ and ‘D’Alembert’s principle’ for solving this problem.
i think i know the answer to a, b and c i will post a picture of my working out. but i dont know how to go about answering question d i think i will get the same answers for kinetic and potential energy but i dont know how to work out the rest. Any help would be realy appreciated