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A 50 kg load is lifted 10 m in 5 s. Power needed? (g = 10 m/s^2)
A500 W
B2500 W
C1000 W
D250 W
Answer & Solution
Correct answer: C. 1000 W
Work = 50 x 10 x 10 = 5000 J over 5 s gives 1000 W.
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