1. A force of 69N is needed to start an 6.9kg box moving across a horizontal surface. Calculate thecoefficient of static friction. If the box continues to move with an acceleration of 1.69 m/s2. What isthe coefficient of kinetic friction?2. A box of 450N is lying in an inclined plane with angle of 35 degrees. If the applied load to move thebox is 269N. Determine the net Ff and the acceleration of the box if the coefficient of static friction is0.35 and the coefficient of kinetic friction is 0.28.

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Answered: 1. A force of 69N is needed to start an…

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 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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