CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE II>Q 3

MEDIUM

JEE Main

IMPORTANT

Earn 100

Mark the correct statements about the friction between two bodies.

10% studentsanswered this correctly

Important Questions on Friction

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE II>Q 4

A block is placed on a rough floor and a horizontal force

F

is applied on it. The force of friction

f

by the floor on the block is measured for different values of

F

and a graph is plotted between them.

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>OBJECTIVE II>Q 5

Consider a vehicle going on a horizontal road towards east. Neglect any force by air. The frictional forces on the vehicle by the road

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>EXERCISES>Q 1

A body slipping on a rough horizontal plane moves with a deceleration of

4.0 m s^{- 2}

. What is the coefficient of kinetic friction between the block and the plane?

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>EXERCISES>Q 2

A block is projected along a rough horizontal road with a speed of

10 m s^{- 1}

. If the coefficient of kinetic friction is

0.10

, how far will it travel before coming to rest?

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>EXERCISES>Q 3

A block of mass

m

is kept on a horizontal table. If the static friction coefficient is

μ

, find the frictional force acting on the block.

HARD

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>EXERCISES>Q 4

A block slides down an inclined surface of inclination

30 °

with the horizontal. Starting from rest, it covers

8 m

in the first two seconds. Find the coefficient of kinetic friction between the two.

HARD

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>EXERCISES>Q 5

Suppose a block is pushed down the incline with inclination of

30 °

with a force of

4 N

. The coefficient of friction between the block and incline is

0.11

. How far will the block move in the first

2 s

after starting from rest? The mass of the block is

4 kg

.

HARD

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 6 - Friction>EXERCISES>Q 6

A body of mass $2 kg$ is lying on a rough inclined plane of inclination $30 °$ . Find the magnitude of the force parallel to the incline needed to move the block

$(a)$ up the incline

$(b)$ down the incline.

(Coefficient of static friction $= 0.2$ , $g = 10 m s^{- 2}$ )