Question

An object of mass 20kg is pulled up with a force of 150N on an inclined plane for a distance of 3.0 m. The plane makes an angle of 30° with the horizontal and the coefficient of kinetic friction between the object and the plane is 0.3. Draw the free body diagram and calculate the work done by each force ​

Answer 1

WORK =FORCE × DISPLACEMENT

F=150N

s=d=3 m

F= 150 ×3

=450

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