In a wheel and differential axle type of lifting machine, a crank handle of 240 mm radius takes the place of the wheel and the diameters of the differential axle are 110 mm and 80 mm respectively. If an effort of 80 N is required at the handle to lift a load of 1.12 kN, find the velocity ratio, mechanical advantage and efficiency at this load.

In a wheel and differential axle type of lifting machine, a crank handle of 240 mm radius takes the place of the wheel and the diameters of the differential axle are 110 mm and 80 mm respectively. If an effort of 80 N is required at the handle to lift a load of 1.12 kN, find the velocity ratio, mechanical advantage and efficiency at this load.

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 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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