Interaction of Two Bodies under Gravitation

Q.

Why gravitational force is more at poles and less at equator?

Q. Why doesn't the moon fall into the earth?

Q.

Mention some important characteristics of gravitational force.

Q.

How the gravitational force is produced?

Q. Universal gravitational constant is equal to force when they are separated by a unit distance and both the masses of body is are 1 kg respectively. Now since universal gravitational constant is equal to the force then, since force is vector quantity than universal gravitational constant must be a vector quantity but universal gravitational constant is a scalar quantity. How does this happen. Please explain

Q.

What does gravitational force not depend on?

Q. Select the correct property for the gravitational force between two bodies.

1. Gravitational force is attractive at large distances only.
2. Gravitational force is attractive at small distances only.
3. Gravitational force is attractive at all distances.
4. Gravitational force is attractive at small distances and becomes repulsive at large distances.

Q.

If the distance between two masses is increased by a factor of 5, by what factor would the mass of them have to be altered to maintain the same gravitational force? Would this be an increase or decrease in the mass.

Q. The atmosphere around the earth is held because of ___ force.

Q.

Which is Greater : the attraction of earth for 1 kg of lead or attraction of 1kg of lead for earth. give reason

Q.

Did Sir Angry Prash invent gravity?

Q.

Calculate the gravitation force between a object of mass 80 kg and a object of mass 1200 kg kept at a distance of 10 m.

Q. Two objects of masses 50kg and 90kg, separated by a distance, exert a force of 3N on each other. What will be the gravitational force between them if
a) mass of one body is doubled?
b) mas of both bodies is halved
c) distanc of separation of bodies is doubled?

Q.

What happens to the gravitational force between two objects if the mass of an object is tripled explain with the help of formula

Q.

When a bus suddenly starts, the standing passengers fall backwards in the bus. This can be explained by

1. Newton's first law

2. Newton's third law

3. Newton's second law

4. None of Newton's law

Q.

The mass of two bodies is doubled and the distance is halved, how will the gravitational force change?

Q.

The gravitational force between two bodies is

1. repulsive only at large distances

2. always repulsive

3. always attractive

4. attractive only at large distances

Q.

A pendulum with a period of 1.8 s on Earth is moved to another planet. On the new planet, its period is 2.5 s. What can you conclude about this new planet?

1. The force of gravity on the new planet is less than it is on Earth.

2. The force of gravity on the new planet is the same as it is on Earth.

3. The force of gravity on the new planet is greater than it is on Earth.

4. Insufficient data.

Q.

The moon's revolution around the earth involves which of the following?

1. Newton's First Law of Motion

2. Centripetal Force

3. Law of Conservation of Momentum

4. Newton's Third Law of Motion

Q. Question 7
Law of gravitation gives the gravitational force between

(a) the earth and a point mass only
(b) the earth and Sun only
(c) any two bodies having some mass
(d) two charged bodies only​​​​​​​

Q.

Who discovered gravity?

Q.

The force of _______ always attracts a body.

Q.

Newton's second law of motion? with example!

Q.

Express gravitational force quantitatively, where $m$ and $M$ are masses and $r$ is the distance between them.

1. $\frac{GmM}{r}$

2. $\frac{GmM}{r^2}$

3. $\frac{G}{r^2}$

4. $\frac{Gm}{r^2}$

Q. Why do bodies possessing mass have gravitational attraction of their own?

Q.

If the distance between two masses is increased by a factor of 5, by what factor would the mass of one of them have to be altered to maintain the same gravitational force? Would this be an increase or decrease in the mass?

Q.

It is said that there is no shield found which can stop gravity acting. But there is a force called centripetal force which acts between planets so that they don't bump into each other. So is'nt it that centripetal force is a shield to gravity?

Q. Does gravity exist because of the presence of a magnet inside the earth?

Q. The areas $A_1,A_2$, and $A_3$ are equal. Time taken for a planet to move from point M to N is $T_1$, and from point O to Q is $T_2$. Find the ratio of $T_1$ and $T_2$.

1. 1:1
2. 1:2
3. 2:1
4. 1:4

Q.

Who named the gravitation?