Use Numbers How much work is done when a force of 30 N moves an object a distance of 3 m? 23 How much power is used when 600 J of work is done in 10 s? 24 How much force would be needed to push a box weighing 30 N up a ramp that has a ideal mechanical advantage of 3? Assume there is no friction. 25 Calculate the efficiency of a machine that requires 20 J of input work to do 10 J of output work. 26 Calculate the mechanical advantage of a machine that changes an input force of 50 N into an output force of 150 N. 27 A compound machine is made up of four sim- ple machines. If the efficiencies of the simple machines are 98%, 93%, 87%, and 92%, respectively, what is the overall efficiency of the compound machine?

Use Numbers How much work is done when a force of 30 N moves an object a distance of 3 m? 23 How much power is used when 600 J of work is done in 10 s? 24 How much force would be needed to push a box weighing 30 N up a ramp that has a ideal mechanical advantage of 3? Assume there is no friction. 25 Calculate the efficiency of a machine that requires 20 J of input work to do 10 J of output work. 26 Calculate the mechanical advantage of a machine that changes an input force of 50 N into an output force of 150 N. 27 A compound machine is made up of four sim- ple machines. If the efficiencies of the simple machines are 98%, 93%, 87%, and 92%, respectively, what is the overall efficiency of the compound machine?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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