A prony brake is to be built to measure the torque output of a 10-hp motor that operates at a speed of 1200 r/min. If the scale available has a maximum capacity of 7kg, what is the length of the shortest brake arm that could be used to measure any torque output of the motor up to 125 percent of its rated value?

A prony brake is to be built to measure the torque output of a 10-hp motor that operates at a speed of 1200 r/min. If the scale available has a maximum capacity of 7kg, what is the length of the shortest brake arm that could be used to measure any torque output of the motor up to 125 percent of its rated value?

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.60P: The force P applied to the brake handle enables the band brake to reduce the angular speed of a...

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