Gravitational force

Q.

Is gravity just centrifugal force?

Q.

What do you mean by weight of an object.

Q.

A satellite is revolving around the Earth in a well defined circular orbit. The gravitational force between the Earth and satellite is the centripetal force of the circular motion. What can we say about the motion of the satellite if the gravitational force becomes zero?

1. The satellite will continue moving in its circular orbit.
2. The satellite will move tangentially.
3. The satellite would come at rest.
4. The satellite will fall towards the center of the Earth.

Q. If there is no gravity on Earth, every object on Earth will ________.

1. stop moving
2. start floating
3. fall down
4. start rotating

Q.

Which force is responsible for weight to physical objects?

1. Gravitational force

2. Electrostatic force

3. Muscular force

4. Magnetic force

Q.

We feel our weight because of the gravitational force applied by earth on us.

1. True

2. False

Q.

Choose correct option:

Statement 1: Tide is defined as alternate rise and fall of the ocean's surface.

Statement 2: It is caused by the gravitational interaction between the moon and the earth.

1. Statement 1 is wrong and statement 2 is the correct explanation of it.

2. Statement 1 is wrong and statement 2 is wrong explanation of it.

3. Statement 1 is correct and statement 2 is the correct explanation of it.

4. Statement 1 is correct but statement 2 is the wrong explanation of it.

Q.

When a body is moving upwards, the force of gravity is acting

1. Upwards

2. Downwards

3. Horizontal direction

4. Between horizontal and upwards direction

Q.

Name the common and SI unit of weights. What is the relation between two units?

Q.

What is the pulling force that the earth exerts on every object near it?

1. Gravity

2. Magnetism

3. Electric

4. Friction

Q.

Rain falls downwards because of the

1. Electrostatic

2. Magnetic

3. Gravitational

4. None of these

Q.

Which of the following forces is exerted by Earth towards its centre?

1. Electrostatic force

2. Gravitational force

3. Mechanical force

4. Muscular force

Q.

The force that acts between planets and Sun in the solar system is

1. frictional force

2. gravitational force

3. magnetic force

4. muscular force

Q.

Gravitational force exists between two persons standing next to each other.

1. True

2. False

Q.

Ripe fruits, after detaching from a tree, fall towards Earth. This is because of

1. electrostatic force

2. gravitational force

3. mechanical force

4. magnetic force

Q.

Which of the following forces is responsible for rain falling downwards?

1. Electrostatic Force

2. Magnetic Force

3. Gravitational Force

4. Frictional Force