Free Printable Gravitation

1.

What is the value of g?

(a)

2.

The gravitational force between two bodies

a)

Is always attractive

b)

Is always repulsive

c)

Is inversely proportional to the distance between two bodies

d)

Is directly proportional to the distance between two bodies

3.

The acceleration due to gravity depends

a)

Only on the mass of the planet

b)

Only on the size of the planet

c)

On both the size and mass of the planet

d)

None of these

4.

The value of acceleration due to gravity g will be maximum at

a)

equatorial line

b)

the centre of earth

c)

the poles of Earth

d)

midway between the pole and the equator

5.

A body is taken from the moon to the Earth.Which is correct?

a)

Mass decreases

b)

Mass increases

c)

Weight increases

d)

Weight decreases

6.

In which case the escape velocity is maximum

a)

When angle of projection is 45°

b)

When it is projected vertically up

c)

When it is projected horizontally

d)

The escape velocity is independent of the angle of projection

7.

The mass of a body on the earth surface is 40 kg. Its mass at the centre of earth will be

a)

Zero

b)

Greater than 40 kg

c)

Infinite

d)

Unchanged

8.

The weight of a body at the surface of earth is 40 N. Its weight at the centre of earth will be

a)

Zero

b)

Infinite

c)

40 N

d)

Unpredictable

9.

If the distance between two masses is halved,then the gravitational force of attraction between them becomes

a)

doubled

b)

halved

c)

4 times

d)

¼ times the initial value

10.

The square of the period of revolution of a planet is directly proportional to the cube of

a)

The mean distance of the planet from the sun

b)

The mass of the planet

c)

The radius of the planet

d)

The diameter of the planet

11.

The relation between height and depth when the acceleration due to gravity at a height h is equal to that at a depth d is given by

a)

d=2h

b)

h=2d

c)

h=3d

d)

h=3/2 d

12.

The unit of gravitational field is

a)

N/m

b)

Nm²

c)

N/s²

d)

N/kg

13.

what is inverse square law ?

a)

r square

b)

1/r square

c)

4/r square

d)

d square

14.

how does force of gravitation act when masses of two objects are doubled

a)

4x force

b)

1/4x force

c)

2x force

d)

1/9x force

15.

what is 'g' of earth

a)

9.8

b)

10

c)

6.67*10-11(that is power -11)

d)

6.67

16.

Kepler stole who's observation ?

(a)

17.

Formula for weight is

a)

W=ma

b)

W=mG

c)

W=mg

d)

W=m

18.

an object has a mass 36 kg on earth find its weight on the moon (approximated values)

a)

360 N

b)

300 N

c)

60 N

d)

10 N

19.

Which of the following is Newton's Law on Gravitation?

a)

F=Gm₁m₂/r

b)

F = Gm₁m₂/r²

c)

F = Gm₁m₂/2r

d)

F = m₁m₂/2r

20.

If I double the distance between two objects, what happens to their gravitational Force?

a)

4x bigger

b)

4x smaller

c)

2x bigger

d)

2x smaller

21.

If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?

a)

Doubles

b)

Quadruples

c)

Cut in Half

d)

4x Smaller

22.

Is it true that the moon falls?

a)

No, it could have fallen by now.

b)

No, there is no good explanation as to why

c)

Yes, the moon is falling around the earth due to its tangential velocity.

d)

Yes, the moon is falling straight down.

23.

What states that "every object in the universe attracts every other object"?

a)

Law of Universal Gravitation

b)

Newton's First Law of Motion

c)

My mother

d)

Inertia & gravity

24.

As mass increases, what happens to gravitational force?

a)

increases

b)

decreases

c)

stays the same

d)

i don't know

25.

Which of the following will not change in different gravitational fields?

a)

wieght

b)

force

c)

mass

d)

pounds

26.

Which of the following will change with different gravitational forces?

a)

mass

b)

amount of matter in an object

c)

weight

d)

kilograms

27.

What would happen to your weight if Earth's mass was cut in half?

a)

increase because gravitational force increases

b)

decrease because gravitational force decreases

c)

decrease because gravitational force increases

d)

increase because gravitational force decreases

28.

The gravitational force between two objects does not depend on:

a)

Sum of the masses

b)

Product of the masses

c)

Gravitational constant

d)

(a)Distance between the masses

29.

If the radius of the earth were to shrink by 1% its mass remaining the same, the acceleration due to gravity on the earth's surface would:

a)

Decrease by 2%

b)

Remain unchanged

c)

Increase by 2%

d)

Increase by 1%

30.

The acceleration due to gravity at pole and equator can be related as:

a)

g_p < g_e

b)

g_p = g_e = g

c)

g_p < g_e = g

d)

g_p > g_e

31.

Kepler's Second Law states

a)

objects attract other objects with a force that is directly proportional to the product of their masses

b)

the square of the ratio of the periods of any two planets revolving around the Sun is equal to the cube of the ratio of their average distance from the Sun

c)

An imaginary line joining a planet and the sun sweeps out an equal area of space in equal amounts of time.

d)

Planets move about the Sun in an elliptical orbit with the Sun at one of the foci.

32.

Kepler's first law states that the orbits of the planets are oval in shape or

a)

ellipses

b)

perfect circles

33.

The path a planet travels around the sun is called its

a)

orbit

b)

ellipse

c)

barycenter

d)

precession

34.

In which location would you weight the least?

a)

Venus

b)

Earth

c)

Jupiter

d)

Moon

35.

which are the following is Newton’s Law of gravitation ?

a)

$W=\frac{GMm}{r}$

b)

$F\ =\frac{GMm}{r^2}$

c)

$V\ =\sqrt{\frac{GM}{r}}$

d)

$g=-\ \frac{GM}{r}$

36.

Newtton's Law of Gravitation states a mangnitude of an attractive force between two point masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

what is it related to ?

a)

Newton's 1st Law of motion

b)

Newton's 2nd Law of motion

c)

Newton's 3rd Law of motion

37.

what is the unit for Gravitional Field strength, $a_g\ =\frac{GM}{r^2}$

a)

$N\ kg\ ^{-1}$

b)

$J\ kg\ ^{-1}$

c)

$m\ s\ ^{-2}$

d)

$m\ s\ ^{-1}$

38.

A satelite is orbiting about the earth at the height of 45 km from the earth surface. the satelite's velocity is $7.88\ \times10^{3\ }ms^{-1}$ . what is the mass of earth?

a)

$6.0\times10^{26}\ kg$

b)

$6.4\ \times10^{6\ }kg$

c)

$5.56\ \times10^{26}kg$

d)

$6.0\ \times10^{24\ }kg$

39.

Newton’s Universal Law of Gravitation state that gravitational force, F is ______ to the product of mass of the objects and ______ to the square of the distance between the objects

Hukum Kegravitian Semesta Newton menyatakan bahawa daya graviti, F adalah ______ terhadap hasil darab jisim-jisim objek dan ______ terhadap kuasa dua jarak antara objek-objek

a)

directly proportional, directly proportional

berkadar terus, berkadar terus

b)

directly proportional, inversely proportional

berkadar terus, berkadar songsang

c)

inversely proportional, inversely proportional

berkadar songsang, berkadar songsang

d)

inversely proportional, directly proportional

berkadar songsang, berkadar terus

40.

Calculate the gravitational acceleration when the object is at 3R.
Kirakan pecutan graviti apabila objek berada pada 3R.

g\ =\ \frac{GM}{r^2}

a)

$2.5\ m\ s^{-2}$

b)

$3.3\ m\ s^{-2}$

c)

$4.9\ m\ s^{-2}$

d)

$9.8\ m\ s^{-2}$

41.

A piece of space junk of mass 24 kg is at a distance of 7.00 × 10^6 m from the center of the Earth. What is the gravitational force between the space junk and the Earth? [G = 6.67 × 10^-11 N m^2 kg^-2, mass of the Earth = 5.97 × 10^24 kg]

F\ =\ G\ \frac{Mm}{r^2}

a)

12.4 N

b)

19.5 N

c)

26.6 N

d)

31.3 N

42.

At what height should a satellite be if the satellite is required to orbit the Earth in a period of 24 hours?
[Orbital period of the Moon = 27.3 days, radius of orbit of the Moon = 3.83 × 10^8 m]

a)

$2.8\times10^7$ m

b)

$2.9\times10^7$ m

c)

$3.5\times10^7$ m

d)

$3.6\times10^7$ m

43.

Proba-1 satellite orbits the Earth at a height of 700 km. What is the linear speed of this satellite?

[G = 6.67 × 10^-11 N m² kg^–2, mass of the Earth = 5.97 × 10²⁴ kg, radius of the Earth = 6.37 × 10⁶ m]

a)

4.52 x 10³ m s^-1

b)

7.49 x 10³ m s^-1

c)

9.37 x 10³ m s^-1

d)

12.26 x 10³ m s^-1

44.

Calculate the escape velocity of a satellite in an orbit 300 km above Earth’s surface. Given G = 6.67 x 10^-11 N m^2 kg^-2, radius of earth is 6370 km and mass of the earth is 5.97 x 10^24 kg.

a)

7.73 km s^-1

b)

10.9 km s^-1

c)

36.4 km s^-1

d)

244 km s^-1

45.

Acceleration of a satellite is ______

A)

\sqrt{\frac{GM}{r}}

B)

\frac{GM}{r^2}

C)

\frac{GM_{1_{ }}M_{2_{ }}}{r^2}

a)

A

b)

B

c)

C

d)

none of the above

46.

Planets orbit the Sun in a shape called a(n)

a)

circle

b)

ellipse

c)

focus

d)

perihelion

47.

When a planet orbits the Sun, one of the foci of the elliptical orbit is

a)

the axis

b)

the perihelion

c)

the center

d)

the Sun

48.

A planet moves __________ when it is farthest from the sun.

a)

faster

b)

slower

49.

The path a planet travels around the sun is called its

a)

orbit

b)

ellipse

c)

barycenter

d)

precession

50.

Force of gravity is inversely proportional to

a)

Mass

b)

Weight

c)

Distance

d)

Time

51.

Force of gravity is directly proportional to

a)

Mass

b)

Weight

c)

Distance

d)

Time

52.

Two objects move toward each other gravitationally. As they get closer, the force between them:

a)

remains constant

b)

increases

c)

decreases

53.

Gravity is _____.

a)

a type of magnetism

b)

an attractive force

c)

a type of electricity

d)

a form of energy

54.

The force that keeps the body in a circular path and is acting towards the center is called?

a)

Central force

b)

Frictional Force

c)

Centripetal Force

55.

Choose the correct definition of Universal law of gravitation

a)

Every object in the universe attracts every other object with a force which is proportional to the product of the distance between them and inversely proportional to their masses

b)

Every object in the Universe attracts every other object with a force which is inversely proportional to the square of the distance between them and proportional to the product of their masses

c)

Every object in the universe attracts every other object with a force which is proportional to their masses and inversely proportional to the square of distance between them

56.

What is G

a)

Gravitation

b)

Acceleration due to gravity

c)

Constant of Proportionality

57.

The value of G is :

a)

9.8m/s^-2

b)

6.673 * 11^-11

c)

6.683 * 10 ^-11

d)

6.673 * 10^-11

58.

The SI unit of G is ?

a)

Nm¹Kg¹

b)

Mm² Kg²

c)

Nm²kg²

59.

What is g ?

a)

Acceleration

b)

gravitation constant

c)

Acceleration due to gravity

60.

what is the value of g ?

a)

8.9 m/s^-2

b)

9.3 m/s^-2

c)

9.8 m/s^-2

d)

8.66 m/s^-11

61.

which is a correct statement about mass ?

a)

Mass can be zero

b)

mass is vector quantity

c)

mass is constant everywhere

d)

mass is derived quantity

62.

weight of an object on moon = ?

a)

1/6 * its mass on earth

b)

1/6 * twice its weight on earth

c)

1/6 * its weight on earth

63.

if mass is less gravitation will be

a)

more

b)

constant

c)

equal

d)

less

64.

weight of an object is directly proportional to mass

a)

true

b)

false

65.

which is a correct statement about mass ?

a)

Mass can be zero

b)

mass is vector quantity

c)

mass is constant everywhere

d)

mass is derived quantity

66.

Which among the following is a wrong differentiation between mass and weight ?

a)

Mass is amount of matter in a body whereas weight is the measure of force acting on body

b)

Si unit of mass is kg whereas SI unit of weight is newton

c)

mass has both magnitude and direction whereas weight has only direction

d)

mass can easily be measured by beam balance whereas weight can be measured by spring balance

67.

Which off the following statement is correct about acceleration due to gravity

a)

Value of g varies from place to place

b)

g is more at equator than at pole

c)

g is equal at equator and pole

d)

g is less at the equator than at the pole

68.

The correct equation to show relation between G and g is :

a)

g=Mm/d²

b)

G=Mm/R²

c)

g=G Mm/d²

d)

g= Gm/R²

69.

what is the value of g ?

a)

8.9 m/s^-2

b)

9.3 m/s^-2

c)

9.8 m/s^-2

d)

8.66 m/s^-11

70.

The universal Law of Gravitation explained

a)

the tides due to moon and the sun

b)

the force that binds us to the earth

c)

the motion of the planets around the sun

d)

All of the above

71.

Why do we weight less on moon as compared to earth ?

a)

because moons gravitational force is less

b)

because moon weight less

c)

because moon has less mass compared to earth

d)

because is space our weight is reduced

72.

Force of gravity is inversely proportional to

a)

Mass

b)

Weight

c)

Distance

d)

Time

73.

If Earth's mass was cut in half, what would happen to your mass?

a)

increase because gravitational force increases

b)

decrease because gravitational force decreases

c)

decrease because gravitational force increases

d)

nothing, mass is not affected by gravitational force

74.

Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.

a)

2.96x10^-7N

b)

3.00x10^-6N

c)

2.22x10^-9N

d)

2.23x10^-8N

75.

Find the force of gravitation between two 5.0 kg balls that are 1.5 m apart.
Use $G=6.67\times10^{-11}\ \frac{N.m^2}{kg^2}$

a)

1.5\times10^{-10}\ N

b)

$7.4\times10^{-10}\ N$

c)

$1.1\times10^{-9}\ N$

76.

weight of an object is directly proportional to mass

a)

true

b)

false

77.

Which of the following is Newton's Law on Gravitation?

a)

F=Gm₁m₂/r

b)

F = Gm₁m₂/r²

c)

F = Gm₁m₂/2r

d)

F = m₁m₂/2r

Gravitation

Total questions: 77

Worksheet time: 46mins

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