Free Printable Gravitation2

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Gravitation2

Total questions: 25

Worksheet time: 25mins

Name

Class

Date

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

F=Gm₁m₂/r

F = Gm₁m₂/r²

F = Gm₁m₂/2r

F = m₁m₂/2r

Two factors effecting the magnitude of the force of gravity between 2 objects are...

mass and distance

mass and matter

distance and weight

weight and mass

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

4x bigger

4x smaller

2x bigger

2x smaller

The gravitational force between two bodies of masses m1 and m2 separated by distance r is F. State the effect on the gravitational force when m1 increases twice.

1/2 F

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

Law of Universal Gravitation

Newton's First Law of Motion

My mother

Inertia & gravity

Force of gravity is directly proportional to

Mass

Weight

Distance

Time

Force of gravity is inversely proportional to

Mass

Distance ²

Distance

Time

The value of Universal Gravitational constant is

6.673X10^-11 Nm^-2kg²

6.673X10^-11 Nm²kg²

6.673X10^-11 Nm²kg^-2

6.673 x10^-11N m^-2kg^-2

Newton said that any two masses will...

combine into a larger mass.

attract each other.

create gravitational fields.

push each other apart.

10.

The picture shows three objects gravitationally interacting with each other. Which object exerts the greatest force on object B?

Object A

Object C

A and C exert an equal force on B

Cannot be determined

11.

The gravitational force in the previous interaction was 20 N. Determine the gravitational force in the new situation where the second mass is doubled.

10 N

20 N

40 N

80 N

12.

Kepler's Second Law states

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

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

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

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

13.

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

ellipses

perfect circles

14.

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

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

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

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

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

15.

the gravitation force of a particle X of mass $m_1$ on another particle Y mass $m_2$ is $F_1$ . the gravitational force of Y on X is $F_2$ . if $m_1>m_2$ , which of the following statements about the gravitational force $F_1$ and $F_2$ is correct ?

magnitude of $F_1$ is greater than the magnitude of $F_2$

$F_{1\ }$ and $F_2$ in same directions

$F_{1\ }$ and $F_2$ act along the line joining $m_1$ and $m_2$

$F_1$ and $F_2$ form an potential energy pair

16.

The mass of moon is about 0.012 times that of the earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:

Same as that on the earth

About one-fifth of that on the earth

About one-sixth of that on the earth

About one-fourth of that on the earth

17.

An apple falls from a tree because of the gravitational attraction between the earth and the apple. If F1 is the magnitude of the force exerted by the earth on the apple and F2 is the magnitude of the force exerted by the apple on the earth, then

F1 is very much greater than F2

F2 is very much greater than F1

F1 and F2 are equal

F1 is only a little greater than F2

18.

. A boy is whirling a stone tied with a string in a horizontal circular path as shown in the following figure:

Will move along a straight line towards the centre of the circular path

Will move along a straight line the tangential to the circular path

Will move along a straight line perpendicular to the circular path away from the boy

Will continue to move in the circular path

19.

The gravitational force between two bodies is decreased by 36% when the distance between them is increased by 3m. The initial distance between them is

12m

15m

20.

The gravitational force between two objects is F. If masses of both objects are doubled and distance between them becomes doubled, then the gravitational force would become

21.

The masses of two planets are in the ratio 1 : 2. Their radii are in the ratio 1 : 2. The acceleration due to gravity on the planets are in the ratio

1 : 2

2:1

1:4

4:1

22.

On the earth, a stone is thrown from a height in a direction parallel to the earth’s surface while another stone is simultaneously dropped from the same height. Which stone would reach the ground first and why?

free fall will reach first

body with horizontal motion reach first

both will reach at same time

never reach ground

23.

Two particles are placed at some distance. If the mass of each of the two particles is tripped, keeping the distance between them unchanged, the value of gravitational force between them will be

1/9 times

9 times

6 times

1/6 times

24.

Two objects of different masses falling freely near the surface of moon would

have same velocities at any instant

have different accelerations

experience forces of same magnitude

undergo a change in their inertia

25.

The earth attracts the moon with a gravitational force of 10²² N.The moon attracts the earth with a gravitational force of

less than 10²² N

10²² N

Greater than 10²² N

10-²² N

Reset

Gravitation2

Total questions: 25

Worksheet time: 25mins

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