A 2.5 kg block is pulled with a force of 20 N at an angle of 50 degree to the horizontal. The coefficient of friction between the block and the surface is 0.2. What is the magnitude of net horizontal force acting on the block?

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weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

answer( sicar );