What work does gravity do when a 0.8 tonne slab of concrete is lowered into the basement to a depth of 4 m?
| November 30, 2020 | education
Given:
F = 4 m
m = 0.8 t = 800 kg
g = 10
Find: A -?
Decision:
A = F * m * g
A = 800 * 10 * 4 = 32000J = 32kJ
Answer: When a concrete slab weighing 0.8 tons is lowered into the basement to a depth of 4 m, gravity does a work of 32 kJ
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