Questions
Which one of the following statements is incorrect?
a
Rolling friction is smaller than sliding friction.
b
Limiting value of static friction is directly proportional to normal reaction.
c
Frictional force opposes the relative motion.
d
Coefficient of sliding friction has dimensions of length.
detailed solution
Correct option is D
Coefficient of sliding friction has no dimension.f=μsN⇒μs=fNTalk to our academic expert!
Similar Questions
A block of mass 5 kg is placed on a rough horizontal plane. A time dependent horizontal force F = (t2+2t)N acts on the block. The friction force between the block and the plane at t = 3 s is ()
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