Mechanical Advantage - Wheel & Axle, Pulleys
Wheel & Axle
1.- What is the mechanical advantage of a wheel with a radius of 12 cm connected to an axle with a radius of 2 cm?
2.- 12. A pennyfarthing is a style of bicycle with a very large front wheel and a small rear wheel. The cyclist, who sits high above and behind the front wheel, pedals this wheel directly. The distance the pedals are turned (input distance) in one rotation is about 0.64 m. If the mechanical advantage of the pennyfarthing is 0.16, how far does the large wheel turn in one rotation?
Mechanical Advantage - Pulleys
3.-A pulley system has 3 sections of ropes that lift the load. The mechanical advantage of the system is…?
4.- What is the mechanical advantage for the following pulley system?
5.- What is the minimum effort that must be applied to lift the load?
6.- What is the input force needed to lift a 60 Newton weight using the pulley system in the illustration?
7.- What is the mechanical advantage for the following pulley system?
8.- What is the maximum load that can be lifted with this system?
9.- A pulley system was constructed on an old sailing ship to lift a sail of 1,000 kg by one single sailor. What should the minimum weight of the sailor be if he wanted to raise the sail by just hanging from the rope?
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