The loaded cab of an elevator has a mass of 3x103 kg and, Ask an Expert

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Q. The loaded cab of an elevator has a mass of 3x10^3 kg and moves 177m up the shaft in 23 s at constant speed. At what average rate does the force from cable do work on the cab?

Q. Consider a super tanker, with a mass of 6×10^8 {rm kg}. If it is pushed by a rocket motor (force 7×10^6 {rm N}) and is subject to no other forces, what would be the magnitude of its acceleration?

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