Question

A grandfather clock uses energy stored in raised weights. The weights transfer
energy to the clock mechanism as they fall. One clock has a 4.5 kg weight that
supplies energy to the chimes (which play a few notes every 15 minutes), and two 3.5 kg weights that power the clock and the mechanism that strikes the hours.

a) Calculate how much energy is stored when all three of these weights are raised by 70 cm.
b) How far does the 4.5kg weight have to be lifted to store 45J of energy

Answer 1

A grandfather clock uses energy stored in raised weights. The weights transfer

energy to the clock mechanism as they fall. One clock has a 4.5 kg weight that

supplies energy to the chimes (which play a few notes every 15 minutes), and two 3.5 kg weights that power the clock and the mechanism that strikes the hours.

a) Calculate how much energy is stored when all three of these weights are raised by 70 cm.

b) How far does the 4.5kg weight have to be lifted to store 45J of energy

Answer 2

Answer:

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