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Grade 12Integral Calculus

Kindly explain this question to me,
a horizontal force of 10N is necessary to just hold a block stationary against a wall . The coefficient of friction between the block and the wall is 0.2. The weight of the block is?
my doubt is why cant i equate 10N =umg?

Megha

9 Years agoGrade 12

1 Answer

Nayan Sharma

Approved Tutor Answer9 Years ago

Imagine a 3D figure of the cube attached with the wall. Here, direction of the following forces are-mg=-jFriction = jHorizontal force = -kSo here, uN = mg, where N=10 newton

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