11th Physics Weekly Test - 4 ( Gravitation )

MABS Institution

11th Physics Weekly Test - 4 ( Gravitation )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 3 - Answer All Question

Imagine a light planet revolving around a massive star in a circular orbit of radius r with a period of revolution T. If the gravitational force of attraction between planet and the star is proportional to r^3/2, find the relation between T & r.

A Geo-stationary satellite bits around the earth in a circular but of radius 36,000 m then what will be the time period of a specially satellite orbiting a few hundred km above the earth's surface (R_earth = 6400 km)

A particle is projected upward from the surface of the earth (radius) with a K.E equal to half the minimum value needed for it to escape. To which height, does it rise above the surface of earth?

When does the work done to be negative and positive?

A simple pendulum has a .times period T₁ when on the earth's surface & T₂ when taken to a hight & above the earth's surface, where R is the radius of the earth. What is the value of T₂/T₁?

A student was asked a question ‘why are there summer and winter for us? He replied as ‘since Earth is orbiting in an elliptical orbit, when the Earth is very far away from the Sun(aphelion) there will be winter, when the Earth is nearer to the Sun(perihelion) there will be winter’. Is this answer correct? If not, what is the correct explanation for the occurrence of summer and winter?

Draw graphs showing the variation of acceleration due to gravity with (i) height above the earth's surface (ii) depth below the earth's surface.

Find the expression of the orbital speed of satellite revolving around the earth.

The time period of the satellite of the earth is Sh. If the separation between the earth and the satellite is increased to 4 times the previous value, then what will be the new time period of the satellite acceleration to Kepler's law of periods.

Discuss the forces which depend on the type on the type of interaction.

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11th Physics Weekly Test - 4 ( Gravitation )

MABS Institution

11th Physics Weekly Test - 4 ( Gravitation )-Aug 2020

Part - A

Generic 3 - Answer All Question

Imagine a light planet revolving around a massive star in a circular orbit of radius r with a period of revolution T. If the gravitational force of attraction between planet and the star is proportional to r3/2, find the relation between T & r.

A Geo-stationary satellite bits around the earth in a circular but of radius 36,000 m then what will be the time period of a specially satellite orbiting a few hundred km above the earth's surface (Rearth = 6400 km)

A particle is projected upward from the surface of the earth (radius) with a K.E equal to half the minimum value needed for it to escape. To which height, does it rise above the surface of earth?

When does the work done to be negative and positive?

A simple pendulum has a .times period T1 when on the earth's surface & T2 when taken to a hight & above the earth's surface, where R is the radius of the earth. What is the value of T2/T1?

Draw graphs showing the variation of acceleration due to gravity with (i) height above the earth's surface (ii) depth below the earth's surface.

Find the expression of the orbital speed of satellite revolving around the earth.

The time period of the satellite of the earth is Sh. If the separation between the earth and the satellite is increased to 4 times the previous value, then what will be the new time period of the satellite acceleration to Kepler's law of periods.

Discuss the forces which depend on the type on the type of interaction.

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Imagine a light planet revolving around a massive star in a circular orbit of radius r with a period of revolution T. If the gravitational force of attraction between planet and the star is proportional to r^3/2, find the relation between T & r.

A Geo-stationary satellite bits around the earth in a circular but of radius 36,000 m then what will be the time period of a specially satellite orbiting a few hundred km above the earth's surface (R_earth = 6400 km)

A simple pendulum has a .times period T₁ when on the earth's surface & T₂ when taken to a hight & above the earth's surface, where R is the radius of the earth. What is the value of T₂/T₁?