First slide
Static friction
Question

In the arrangement shown, mass of the block is 5 kg and coefficient of static friction between the block and inclined surface is 0.2. For what minimum value of F, Will the block be on the verge of slipping down the plane ? Given tan370=34.

Moderate
Solution

N = Normal reaction of the inclined surface on the block = (mg cos θ + F)

   fSmax=μN=μmgcosθ+F

   μmgcosθ+F=mg  sinθ

  F=   mgsinθμcosθ=5×10sin3700.2cos370N=110N

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App