Free Printable Friction

1.

Gurav was asked to arrange forces due to rolling, static and sliding frictions in an increasing order. Their arrangements are given below. Choose the correct arrangement.

a)

(a) Rolling, Static, Sliding

b)

(b) Static, Rolling, Sliding

c)

(c) Rolling, sliding, static

d)

(d) Sliding, Static, Rolling

2.

Friction is a

a)

(a) non-contact force

b)

(b) contact force

c)

(c) magnetic force

d)

(d) electrostatic force

3.

Which of the following produces least friction?

a)

(a) Sliding friction

b)

(b) Rolling friction

c)

(c) Composite friction

d)

(d) Static friction

4.

Friction always

a)

(a) opposes the motion

b)

(b) helps the motion

c)

(c) both (a) and (b)

d)

(d) none of these

5.

Friction can be reduced by using

a)

(a) oil

b)

(b) grease

c)

(c) powder

d)

(d) all of these

6.

The shape of an aeroplane is like a

a)

(a) dog

b)

(b) bird

c)

(c) car

d)

(d) all of these

7.

Friction due to fluids is called

a)

(a) force

b)

(b) pressure

c)

(c) friction

d)

(d) drag

8.

Which of the following is not a smooth surface?

a)

(a) Surface of wet soap

b)

(b) Surface of tyres

c)

(c) Glazed tiles

d)

(d) Surface of mirror

9.

A toy car released with the same initial speed will travel farthest on

a)

(a) muddy surface

b)

(b) polished marble surface

c)

(c) cemented surface

d)

(d) brick surface

10.

Friction can be reduced by using (a)

11.

If we apply oil on door hinges, the friction will

a)

(a) increase

b)

(b) decrease

c)

(c) disappear altogether

d)

(d) will remain unchanged

12.

Force of friction depends on

a)

(a) roughness of surface

b)

(b) smoothness of surface

c)

(c) inclination of surface

d)

(d) all of these

13.

Fluids are

a)

(a) liquids

b)

(b) gases

c)

(c) both (a) and (b)

d)

(d) none of these

14.

Which of the following is responsible for wearing out of bicycle tyres?

a)

a) Muscular force

b)

(b) Magnetic force

c)

(c) Frictional force

d)

(d) Electrostatic force

15.

It is difficult to walk on an oily floor because

a)

(a) Floor gets spoiled

b)

(b) There is more resistance

c)

(c) Force of friction is high

d)

(d) Force of friction is very less

16.

Sliding friction is _________ than / to rolling friction

a)

(a) smaller

b)

(b) greater

c)

(c) equal

d)

(d) None of the above

17.

Friction due to fluid is also called (a)

18.

The sole of shoes and the tyres of vehicles are treaded to (a) friction.

Friction

Total questions: 18

Worksheet time: 11mins

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