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A mass of 5 kg is placed on a horizontal surface with a coefficient of kinetic...

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Physics

A mass of 5 kg is placed on a horizontal surface with acoefficient of kinetic friction of 0.4. A force is appliedvertically downward to it and another force of 81 Newtons isapplied at 14 degrees below the horizontal. As it moves 5 meters inthe +x direction it loses 180 Joules of kinetic energy. What is theamount of the force which is applied downward in Newtons?

Answer & Explanation Solved by verified expert
4.1 Ratings (661 Votes)
WhereForce of frictionmass of the body 5kgg 98 ms2 Acceleration adue to gravitymg 5 x 98 49 N Weight of the bodyN is normal forcecoefficient of frictiona is the    See Answer
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