Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 7

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The ratio $\frac{g}{g_{h}}$ , where $g$ and $g_{h}$ are the accelerations due to gravity at the surface of the Earth and at a height $h$ above the Earth's surface, respectively, is

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Important Questions on Gravitation

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 8

A body of weight $500 N$ on the surface of the earth. How much would it weigh half-way below the surface of the earth?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 9

The value of

g

decreases inside the surface of the earth because

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 10

The change in the value of

g

at a height

h

above the surface of the earth is the same as at a depth

d

below the surface of earth. When both

d

and

h

are much smaller than the radius of earth, then which one of the following is correct?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 1

The gravitational potential energy of a body of mass

m

at a distance

r

from the centre of the earth is

U

. What is the weight of the body at this distance?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 2

A particle of mass

m

is placed at the centre of a uniform spherical shell of mass

3 m

and radius

R

. The gravitational potential on the surface of the shell is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 3

A mass

m

is placed at a point

B

in the gravitational field of mass

M

. When the mass

m

is brought from

B

to a near point

A

, its gravitational potential energy will

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 4

The gravitational field due to a mass distribution is

E = \frac{A}{x^{2}}

, in the

x

-direction. Here,

A

is a constant. Taking the gravitational potential to be zero at infinity, the potential at

x

is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 8 - Gravitation>Exercise>Q 5

Two bodies of masses

m

and

9 m

are placed at a distance

r

. The gravitational potential at a point on the line joining them, where gravitational field is zero, is (

G

is universal gravitational constant)