Old-fashioned pendulum clocks are powered by masses that need to be wound back to the top of the clock about once a week to counteract energy lost due to friction and to the chimes. one particular clock has three masses: 4.0 kg, 4.0 kg, and 6.0 kg. they can drop 1.3 meters. how much energy does the clock use in a week?

Energy, E = 178.36 J

Explanation:

It is given that,

Mass 1,

Mass 2,

Mass 3,

Height from which they are dropped, h = 1.3 m

Let m is the energy used by the clock in a week. The energy is equal to the gravitational potential energy. It is given by :

E = 178.36 J

So, the energy used by the clock in a week is 178.36 Joules. Hence, this is the required solution.

scientific laws are the result of testing theories and proving them to be facts.

the ima (higher than 1m) will be greater than the ima with the height of 1m.