JEE Advanced 2011 Physics question
A block is moving on an inclined plane making an angle with the horizontal and the coefficient of friction is μ. The force required to just push it up the inclined plane is 3 times the force required to just prevent it from sliding down. If we define N = 10 μ, then N is
Answer: 5
Solution
Force (parallel to the incline) to just push the block up: . Force to just prevent sliding down: $ = mg(θ -
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