Question
A block of mass 2 kg rests on a rough inclined plane making an angle 30° with horizontal. The coefficient of friction between the block and the inclined plane is 0.65. Find the force of friction on the block.
Solution
Given,
MAss of the block, m = 2kg
Angle of inclination between the block and horizontal line is, 
Coefficient of friction, 
The force that tends to slide the body on the inclined plane is,
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The limiting friction between the block and the inclined plane is,
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Here, we can see that the limiting friction is greater than the force that tends to slide the body.
Therefore the body will be a rest and force of friction on the block is 9.8N
