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Q. Establish the Force required to raise a 25.50 kg object by 2 pulleys, the diameter of larger circular pulley is 12.0 cm and the smaller pulley is 8.5 cm.

Q. With brakes fully applied, a 1230-kg car decelerates from a speed of 80 km/hr. What is the work done by the braking force in bringing the car to a stop?

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