Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 15

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If density of a planet is double that of the earth and the radius $1.5$ times that of the earth, the acceleration due to gravity on the surface of the planet is

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Important Questions on Gravitation

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 16

The gravitational force on a body of mass

1.5 kg

situated at a point is

45 N .

The gravitational field intensity at that point is

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 18

At what height above the surface of earth the value of

" g "

decreases by

2 %

? [radius of the earth is

6400 km

]

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 19

If

R

is the radius of the earth and

g

the acceleration due to gravity on the earth's surface, the mean density of the earth is

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 20

The value of

g

at the surface of earth is

9.8 m s^{- 2} .

Then the value of

' g'

at a place

480 km

above the surface of the earth will be nearly (radius of the earth is

6400 km

)

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 21

If the change in the value of

' g'

at a height

' h'

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

x

below it, then (

x

and

h

being much smaller than the radius of the earth)

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 22

The acceleration due to gravity on a planet is

1.96 m s^{- 2}

. If it is safe to jump from a height of

3 m

on the Earth, the corresponding height on the planet will be

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 23

An object is taken to height

2 R

above the surface of earth, the increase in potential energy is [

R

is radius of earth]

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Gamma Question Bank for Medical Physics>Chapter 8 - Gravitation>Assignment>Q 24

The change in potential energy when a body of mass

m

is raised to a height

n R

from the earth's surface is (

R =

radius of earth),