Engineering Board Exam Reviewer · Physics · medium
How much work is required to lift a 20 kg mass vertically through 3 m at constant speed? (g = 9.81 m/s2)
- 60.0 J
- 1200.0 J
- 65.4 J
- 588.6 J
Answer
D. 588.6 J
Solution
W = mgh = 20(9.81)(3) = 588.6 J.
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