Question

A 91.0-kg mail bag hangs by a vertical rope 3.9 m long. A postal worker then displaces the bag to a position 2.9 m sideways from its original position, always keeping the rope taut.

Part A

What horizontal force is necessary to hold the bag in the new position?

Express your answer with the appropriate units.

Part B

As the bag is moved to this position, how much work is done by the rope?

Express your answer with the appropriate units.

Part C

As the bag is moved to this position, how much work is done by the worker?

Express your answer with the appropriate units.Hi, please make sure your answers are correct.

A 91.0-kg mail bag hangs by a vertical rope 3.9 m long. A postal worker then displaces the bag to a position 2.9 m sideways from its original position, always keeping the rope taut. Part A What horizontal force is necessary to hold the bag in the new position? Express your answer with the appropriate units. F= Submit Request Answer Part B As the bag is moved to this position, how much work is done by the rope? Express your answer with the appropriate units. Wrope = Submit Request Answer Part C As the bag is moved to this position, how much work is done by the worker? Express your answer with the appropriate units. Wworker= Submit Request Answer Provide Feedback

Answer 1

sino=d/e = 2 2.9 3.9 = 0.7435 a) O = sin(0.7435) 0 - 48.039 F = mg tano = (91)(9.8) tan (48.034) F = 989.898N W = Tdcosgol Tension & displacement are always Woos perpendicular, so angle b/w them is go]. mgh mgeld-coso) = (91)(9-1)(3.9)(1-c03 (48.03')). 1182.525 e) - ليا Iw=