Multiple Choice
A crane lifts a 425 kg steel beam vertically a distance of
How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces.
A) 5.8 × 105 J
B) 3.4 × 105 J
C) 4.0 × 105 J
D) 4.9 × 105 J
Correct Answer:
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