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Which one of the following statements is...

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 reactions

C

Frictional force opposes the relative motion

D

Coefficient of sliding friction has dimensions of length

Text Solution

Verified by Experts

The correct Answer is:
D
Coefficient of sliding friction has no dimension.
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