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A block of mass m is placed on an inclined plane and angle of inclination is increasing with respect to time. Coefficient of friction is 3/4, which of the following is incorrect?

(1) When body is at rest N+f+mg=0

(2)f=mgsinθ when θ<37°

(3)f=μmgcosθ when θ>=37°

(4)When body is at rest Ncosθ=mg

Aishwarya Nambiar , 13 Years ago
Grade 11
anser 0 Answers
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