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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)

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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=813kg under the force of gravity.

a) The cranes pulley system produces a mechanical advantage of 10. How many times X does a cable pass over the pulley with in the crane?

b) Assuming at the positive Y direction is up and put an expression for the sum of the forces acting on the car in the Y direction in terms of the force produced by cranes motor Fc and the given variables. Assume the motor pool that it's awesome velocity.

c) What is the minimum force in newtons the cranes motor must provide to begin to move the car?

d) Assuming the cranes motor is producing a force of Fc= 1500 N on the car, what is the cars acceleration, in meters per second squared?