(5%) Problem 3: Cranes use a system of two pulleys to provide mechanical advantage, which reduces...

 

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(5%) Problem 3: Cranes use a system of two pulleys to provide mechanical advantage, which reduces the force they need to apply to lift a particular weight (two such possible configurations are shown in the figure). A crane is attempting to lift a compact car with a mass of m = 730 kg under the force of gravity. The crane's pulley system produces a mechanical advantage of 10. one pass two passes theexpertta.com >25% Part (a) How many times, x, does the cable pass over the pulley within the crane? (Assume that the tension in each segment of the rope is the same.) x=5 Correct! A 25% Part (b) Assuming that the positive y-direction is up, input an expression for the sum of the forces acting on the car in the y-direction, in terms of the force produced by the crane's motor, Fc, and the given variables. Assume the motor pulls at a constant velocity. 0 () 7 8 9 HOME a d Fc ^^4 5 6 g h i * 12 3 1 j k m + - 0 END P S t VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 6 (0% per attempt) detailed view Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. A 25% Part (c) What is the minimum force, in Newtons, the crane's motor must provide to begin to move the car? 25% Part (d) Assuming the crane's motor is producing a force of Fc = 1500 N on the car, what is the car's acceleration, in meters per square second? (5%) Problem 3: Cranes use a system of two pulleys to provide mechanical advantage, which reduces the force they need to apply to lift a particular weight (two such possible configurations are shown in the figure). A crane is attempting to lift a compact car with a mass of m = 730 kg under the force of gravity. The crane's pulley system produces a mechanical advantage of 10. one pass two passes theexpertta.com >25% Part (a) How many times, x, does the cable pass over the pulley within the crane? (Assume that the tension in each segment of the rope is the same.) x=5 Correct! A 25% Part (b) Assuming that the positive y-direction is up, input an expression for the sum of the forces acting on the car in the y-direction, in terms of the force produced by the crane's motor, Fc, and the given variables. Assume the motor pulls at a constant velocity. 0 () 7 8 9 HOME a d Fc ^^4 5 6 g h i * 12 3 1 j k m + - 0 END P S t VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Grade Summary Deductions Potential 0% 100% Submissions Attempts remaining: 6 (0% per attempt) detailed view Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. A 25% Part (c) What is the minimum force, in Newtons, the crane's motor must provide to begin to move the car? 25% Part (d) Assuming the crane's motor is producing a force of Fc = 1500 N on the car, what is the car's acceleration, in meters per square second?