If normal force is doubled, coefficient of friction is

English

Gujarati

Hindi

4-2.Friction

easy

If the normal force is doubled, the coefficient of friction is

A

Not changed

B

Halved

C

Doubled

D

Tripled

Solution

(a) Coefficient of friction is constant for two given surface in contact. It does not depend upon the weight or normal reaction.

Standard 11

Physics

Share

Similar Questions

Find the minimum value of $m$ that should placed on $20\, kg$, so that system remain at rest …….. $kg$

medium

A body of mass $10$ kg slides along a rough horizontal surface. The coefficient of friction is $1/\sqrt 3 $. Taking $g = 10\,m/{s^2}$, the least force which acts at an angle of $30^o $ to the horizontal is …… $N$

medium

In figure, two blocks $M$ and $m$ are tied together with an inextensible and light string. The mass $M$ is placed on a rough horizontal surface with coefficient of friction $\mu$ and the mass $m$ is hanging vertically against a smooth vertical wall. The pulley is frictionless. Choose the correct statement $(s)$ related to the tension $T$ in the string

hard

A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is $\mu .$ If the mass is pulled by a force $P$ as shown in the figure, the limiting friction between body and surface will be

medium

A block of mass $10 \,kg$ is held at rest against a rough vertical wall $[\mu=0.5]$ under the action a force $F$ as shown in figure. The minimum value of $F$ required for it is ………… $N$ $\left(g=10 \,m / s ^2\right)$

medium