Question
Eight books, each 4.6 cm thick and of mass 1.8 kg on a flat table.How much work is required to stack them on too of one another?
Answers
oobleck
work = PE = mgh, so to stack the 7 books on top of one of them, you have
mg(h + 2h + ... + 7h) = 1.8 * 9.81 * 0.046 * 7*8/2 = 22.74J
mg(h + 2h + ... + 7h) = 1.8 * 9.81 * 0.046 * 7*8/2 = 22.74J