A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.00 m. Use g = 10 m/s2. Match the answers with questions. m v the work done on the box by its weight (Ww) A. 50 J v the work done on the box by the tension force in the cable (WT) B. OJ v the net work done on the box (Wnet) C. 320 J D.-320 J E. -50 J

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Chapter7: Work, Energy, And Energy Resources
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Problem 7PE: A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N...
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A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Match the answers with questions.
m
v the work done on the box by its weight (Ww)
A. 50 J
v the work done on the box by the tension force in the cable (WT)
B. O J
v the net work done on the box (Wnet)
C. 320 J
D. -320 J
E. -50 J
Transcribed Image Text:A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Match the answers with questions. m v the work done on the box by its weight (Ww) A. 50 J v the work done on the box by the tension force in the cable (WT) B. O J v the net work done on the box (Wnet) C. 320 J D. -320 J E. -50 J
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