Derive an expression for the work Wf done on the block by friction as it travels from the top of the incline to the bottom. (Express your answer in terms of the variables μ, m, g, h, and α)When α is decreased, does the magnitude of Wf increase or decrease? A block of massm is released from rest at the top ofan incline that makes an angle a with the horizontal.The coefficient of kinetic friction between the blockand incline is uk. The top of the incline is a verticaldistance h above the bottom of the incline.

Given: Mass of block is, m Weight of the body is ,W=mg . The body is release from an rest from top…

A block of mass m is released from rest at the top of an incline that makes an angle a with the horizontal. The coefficient of kinetic friction between the block and incline is µk. The top of the incline is a vertical distance h above the bottom of the incline.

A block of mass m is released from rest at the top of an incline that makes an angle a with the horizontal. The coefficient of kinetic friction between the block and incline is µk. The top of the incline is a vertical distance h above the bottom of the incline.

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 7.22P: A 1.1-kg disk A is placed on the inclined surface. The coefficient of static friction between the...

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Question

Derive an expression for the work Wf done on the block by friction as it travels from the top of the incline to the bottom. (Express your answer in terms of the variables μ, m, g, h, and α)

When α is decreased, does the magnitude of Wf increase or decrease?

A block of massm is released from rest at the top of
an incline that makes an angle a with the horizontal.
The coefficient of kinetic friction between the block
and incline is uk. The top of the incline is a vertical
distance h above the bottom of the incline.

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