Questions
A block pressed against the vertical wall is in equilibrium. The minimum coefficient of friction is:
a
0.4
b
0.2
c
0.5
d
none of these
detailed solution
Correct option is C
Here net driving force= mg-mg2=mg2downwardHence friction will act upward and its magnitude should be f = mg2If the block ‘m’ is stationary the friction between m and the wall should be static.f ≤ flimmg2≤μ.N ⇒ mg2 ≤μ(mg) ⇒ μmin = 12Talk to our academic expert!
Similar Questions
An ice cube is kept on an inclined plane of angle 30°. The coefficient of kinetic friction between the block and incline plane is the . What is the acceleration of the block?
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