Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 21

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A satellite of mass $m$ orbits around the Earth of mass $M$ in an elliptical orbit of semi-major and semi-minor axes $2 a$ and $a$ respectively. The angular momentum of the satellite about the centre of the Earth is

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Important Questions on Gravitation

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 22

A planet moving around the sun sweeps area

A_{1}

in

2

days,

A_{2}

in

4

days and

A_{3}

in

9

days. Then, relation between them
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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 23

A comet revolves around the sun in an elliptical orbit. When it is closest to the sun at a distance

d

, its corresponding kinetic energy is

k_{0} .

If it is farthest from the sun at distance

3 d

then the corresponding kinetic energy will be

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 24

A planet is revolving around the sun as shown in elliptical path

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The correct option is

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 25

In our solar system, the inter-planetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 26

What will be its time period (in earth's days) if a new planet is discovered rotating around the sun with an orbital radius double that of the earth?

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 27

If the angular momentum of a planet of mass

m

orbiting around the sun is

j

, then areal velocity of its radius vector will be

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 28

The distances of Neptune and Saturn from the Sun are nearly

10^{13} m

and

10^{12} m

, respectively. Assuming that they move in circular orbits, their periodic times will be in the ratio

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Physics Crash Course MHT-CET>Chapter 5 - Gravitation>Exercise 1>Q 29

A satellite revolves around the earth in an elliptical orbit. Its speed