# physics

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a 40-N forcee pulls a 4-kg a horizontal distance of 8 meterr. the rope makes an angle of 35 degree with the floor and the coefficient of kinetic friction is 0.2. what is the work done by each acting on block?

• physics -

Ffloor = force on floor = ( m g - 40 sin 35)

Friction force = Ff = Ffloor*.2
work done against friction = Ff * 8

Horizontal force = 40 cos 35
Work done by Horizontal force = 40 cos 35 * 8

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