Discuss the below in detail:
Q: A 2.5 X 3.5 X 6 in. brick whose density is 120 lb/ft3 slips off the top of a building under construction and falls 69ft. For g= 32.0 ft/s2, determine the change in gravitational potential energy of the brick, in ft.lbf. You must include all the steps which are needed to complete the given problem