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Question
Calculate the work done by a force of 30 N in lifting a load of 2kg to a height of 10 m (g = 10 m s−2)
Solution
Given: F = 30 N, load (m) = 2 kg; height = 10 m, g = 10 ms-2
Gravitational force F = mg = 30 N
The distance moved h = 10 m
Work done on the object W = Fh = 30 × 10 = 300 J.
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