Find the potential energy of a body weighing 5 tons at a height of 60 cm.
December 31, 2020 | education
| Let’s remember the formula of potential energy: E (n) = mgh
now we solve according to the given conditions
m = 5 t
h = 60 m
The height is indicated in the desired unit, and the mass must be converted to kg
m = 5t = 5000 kg
What numbers do we have at the moment to solve the problem about the formula:
h = 60m
m = 5000 kg
g (acceleration due to gravity) = 9.8, but we round up to 10.
We solve using the formula: E (p) = mgh = 5000 * 10 * 60 = 3,000,000 J = 3000 kiloJ
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