Centre of Gravity for Regular surfaces

Q. Where does the center of gravity of the atmosphere of the earth approximately lie?

1. At a height equal to one-third the radius of Earth above the Earth's surface
2. At height equal to half the radius of the Earth above the Earth's surface
3. At a height equal to the radius of the Earth above the earth's surface
4. At the centre of the Earth

Q. The centre of gravity is the average position of _______ distribution of the body.

1. mass
2. weight
3. gravity
4. velocity

Q. Why does a person in a freefalling lift experiences 0 weight?

Q. The acceleration due to gravity at Earth's surface is directed towards the ________ of the Earth.

1. equator
2. south pole
3. centre
4. north pole

Q.

Where can one find the centre of gravity for a uniform ring?

Q.

A spring balance records a weight of one kg when a body is suspended from it. When the body is fully immersed inaliquid , the reading recorded by the spring balance is zero.What is the apparent density of the body ?

1. 1 kg m^-3

2. 2 kg m^-3

3. 0.5 kg m^-3

4. 0 kg m^-3

Q.

Difference between center of mass and center of gravity.

Q.

Where is the center of gravity of a uniform ring situated?

Q. The centre of gravity of the body can exist outside the body.

1. True
2. False

Q. A body can always be balanced at its centre of gravity.

1. False
2. True

Q. A body can have multiple points of center of gravity.

1. False
2. True

Q. The centre of gravity of a regular object lie at its geometric centre.

1. never
2. sometimes
3. always