Question
Physics Question on Friction
Which one of the following statements is incorrect ?
A
Rolling friction is smaller than sliding friction.
B
Frictional force opposes the relative motion.
C
Limiting value of static friction is directly proportional to normal reaction.
D
Coefficient of sliding friction has dimensions of length.
Answer
Coefficient of sliding friction has dimensions of length.
Explanation
Solution
The correct option is (D): Coefficient of sliding friction has dimensions of length.