How much work is done in lifting a 5.0 kg box vertically by 2.0 m at constant speed? (use g = 10 m/s squared)
Answer and explanation
Correct answer: C. 100 J
- Step 1: Work equals the force needed (the weight) times the distance. Step 2. W = mgh = 5 x 10 x 2 = 100 J. Answer: 100 J. Why not the others: the other values drop one of the factors.
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