Which one of the following statements is incorrect? - Vidyadip

MCQ

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.
✓
Coefficient of sliding friction has dimensions of length.
D
Frictional force opposes the relative motion.

✓

Answer

Correct option: C.

Coefficient of sliding friction has dimensions of length.

c
Coefficint of sliding friction has no dimention

$f=\mu_s N $

$\mu_s=\frac{f}{N}$

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