A weight of 10 N resting on an inclined plane at 30° to the horizontal is connected by a string passing over a frictionless pulley at the upper end of the inclined plane. The free end of the string is connected to a weight of 20 N which hangs in air. If the coefficient of friction of the inclined surface is 0.2, calculate the time taken by the hanging weight to decend by 1 m.

A weight of 10 N resting on an inclined plane at 30° to the horizontal is connected by a string passing over a frictionless pulley at the upper end of the inclined plane. The free end of the string is connected to a weight of 20 N which hangs in air. If the coefficient of friction of the inclined surface is 0.2, calculate the time taken by the hanging weight to decend by 1 m.

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 7.81P: Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center...

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