A crane lifts a 650kg beam vertically upward 23m and then swings it eastward 18mHow much work does the crane do? Neglect friction, and assume the beam moves with constant speed.
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W146,659.5 JNote that work is done by the crane only in the vertically directionGravity is the force that causes the crane work verticallyWithout friction, there is no force in the eastward/westward direction, hence there is no work in moving the beam eastward.
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