Free Printable Physics Chapter 4 Quiz

1.

Like parallel forces are the forces that are parallel to each other and have the .........….direction.

a)

same

b)

opposite

c)

None

2.

Two equal and opposite forces having same line of action will result in

a)

torque

b)

equilibrium

c)

couple

3.

The number of forces that can be added by head to tail rule are

a)

2

b)

7

c)

any number

4.

Vertical component of force is 10 N, Horizontal component is 5 N. The direction of force F with x-axis is given by.......... degrees

a)

15

b)

63

c)

150

5.

SI unit of Couple is

a)

N-m

b)

N-s

c)

Kg

6.

A small child can play with a fat child on the seesaw, if small child sits at .................... distance than that of fat child

a)

equal

b)

smaller

c)

greater

7.

The center of gravity of a uniform triangular sheet is

a)

point of intersection of its prependiculars

b)

point of intersection of its medians

c)

point of intersection of its Altitudes

8.

The line around which body rotates is called

a)

Axis of rotation

b)

line of action

c)

Moment arm

9.

Racing cars are made stable by

a)

lowering their center of gravity

b)

making their base wide

c)

Both

10.

Second condition for equilibrium is

a)

$\Sigma\ F_{ }\ =\ 0$

b)

$\Sigma\ \tau\ =\ 0$

c)

$\Sigma\ F_x\ =\ 0$

11.

A body is in equilibrium when its

a)

velocity is uniform

b)

acceleration is uniform

c)

speed is uniform

12.

Which of following is NOT a rigid body

a)

Steel Ball

b)

Rubber Band

c)

Glass Rod

13.

An object rotating with uniform speed, satisfies .............. condition of equilibrium

a)

First

b)

Second

c)

None

14.

Both Horizontal and vertical components of force are 10 N, Resultant force is

a)

20 N

b)

Zero

c)

14 N

15.

In the state of unstable equilibrium. As the body topples over, its center of gravity moves towards its … position

a)

lower

b)

higher

c)

remains at same

16.

A mechanic tightens the nut of a bicycle using a 20 cm long spanner by exerting a force of 150 N. The torque that has tightened it is ...........

a)

3000 Nm

b)

30 Nm

c)

75 N m

17.

A force of 200 N is making an angle of 30° with the horizontal. Its horizontal component will be

a)

173 N

b)

230 N

c)

50 N

18.

In stable equilibrium, center of gravity of body is at the … position.

a)

Highest

b)

lowest

c)

None

19.

Lowering center of mass makes body ..........

a)

Stable

b)

Unstable

c)

Has No effect

20.

First Condition of equilibrium states that

a)

$\Sigma\ F_x=0$

b)

$\Sigma\ F_y=0$

c)

Both

21.

A force of 200 N is making an angle of 30° with the horizontal. Its vertical component will be

a)

173.2 N

b)

100 N

c)

50 N

22.

Forces are added by ..........

a)

Arithmetic rules

b)

Graphical rules

c)

Both

23.

A single force that has the same effect as the combined effect of all the forces to be added is called

a)

Horizontal Force

b)

Vertical Force

c)

Resultant Force

24.

Head to tail rule is a ....... method

a)

Arithmetic

b)

Graphical

c)

Both

25.

The vector representing resultant force gives the ..... of all forces to be added.

a)

magnitude

b)

direction

c)

Both

26.

$\sin\theta\ =\ ?\ \ \ \ \tan\theta\ =\ ?$

a)

$\frac{prependiular}{base}\ \ \ \ \ \ \ \ \ \frac{base}{hypotenuse}$

b)

\frac{prependiular}{hypotenuse}\ \ \ \ \ \ \ \ \ \frac{prependiular}{base}

c)

$\frac{base}{prependiular}\ \ \ \ \ \ \ \ \ \frac{base}{hypotenuse}$

27.

In a right angled triangle length of base is 9 cm and its perpendicular is 8 cm, length of hypotenuse will be

a)

12 cm

b)

17 cm

c)

145 cm

28.

A picture frame is hanging by two vertical strings. The tensions in the strings are 5 N and 6 N. The weight of the picture frame will be

a)

30 N

b)

11 N

c)

1 N

29.

A force is acting on a body making an angle of 45° with the horizontal. The horizontal component of the force is 36 N. The force will be

a)

360 N

b)

25 N

c)

50 N

30.

A force is acting on a body making an angle of 35° with the horizontal. The vertical component of the force is 23 N. The force will be

a)

805 N

b)

40 N

c)

58 N

31.

The steering of a car has a radius 20 cm. Find the torque produced by a couple of 100 N

a)

20 N m

b)

40 N m

c)

120 N m

32.

If moment arm is doubled, then torque will become.................

a)

Double

b)

Half

c)

remains same

Physics Chapter 4 Quiz

Total questions: 32

Worksheet time: 51mins

Similar Resources on Wayground