Question

A block of mass 'M' is pressed against a wall with a horizontal force 'F'. Then
a) It will slide down if the wall is smooth
b) Frictional force may balance the weight if the wall is rough
c) Normal reaction is equal to weight of the block
d) Normal reaction is zero if the wall is smooth
(A) a and b are correct
(B) a and d are correct
(C) cand d are correct
(D) b and c are correct​

Answer 1

Explanation:

(C) is the correct answer

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