A system of pulleys is used to lift a load of 45 N a distance of 1.5 m by applying a force of 15 N. What is the mechanical advantage of the pulley system?
Which of the following is a correct definition of the mechanical advantage provided by a machine to which an input force is supplied and which produces an output force ?
Two gearwheels have lever arm lengths of and , as shown in the diagram. The larger wheel is used to turn the smaller wheel. The input force used to turn the larger wheel is 35 N, and the output force from the smaller wheel is 70 N.
What is the mechanical advantage of using the larger wheel to turn the smaller wheel?
What is the ratio of to ?