Question 222: Laws of Motion

Question

Which one of the following statements is
incorrect?

Accepted Answer

We know,
F = $$\mu $$N
$$ \Rightarrow $$ MLT
Ã¢ÂÂ2
= $$\mu $$MLT
Ã¢ÂÂ2
$$ \Rightarrow $$ $$\mu $$ = M
0
L
0
T
0
$$ 	herefore $$ Coefficient of sliding friction has no
dimension.

Answer

Rolling friction is smaller than sliding
friction.

Answer

Limiting value of static friction is directly
proportional to normal reaction.

Answer

Frictional force opposes the relative
motion.

Answer

Coefficient of sliding friction has dimensions
of length.

Laws of Motion

Which one of the following statements is incorrect?

Choose the correct answer: