A uniform push of 150N, applied at an angle of 30 degrees to a 20kg block which rests on a horizontal surface, gives the block a velocity of 6.5m/s in 4s. Find the coefficient of kinetic friction

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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A uniform push of 150N, applied at an angle of 30 degrees to a 20kg block which rests on a horizontal surface, gives the block a velocity of 6.5m/s in 4s. Find the coefficient of kinetic friction 

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