A crane lifts a 650-rm kg beam vertically upward 23 rm m
A crane lifts a 650-{\rm kg} beam vertically upward 23 {\rm m} and then swings it eastward 18 {\rm m}. How much work does the crane do? Neglect friction, and assume the beam moves with constant speed.
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a crane lifts a 650-rm kg beam vertically upward 23 rm m and then swings it eastward 18 rm m how much work does the
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