A 525 kilogram piano is being lowered into position by a crane while two persons steady it with ropes pulling to the sides. Bob's rope pulls to the left, 15 degree below horizontal, with 550 Newton of tension. Ellen's rope pulls toward the right, 25 degree below horizontal.
(a) Find what tension must Ellen maintain in her rope to keep the piano descending at a steady speed?
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(b) Find the tension in the main cable supporting the piano?
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