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What people are asking?

Arjun Sukumaran

Dec 24, 2014

what are the uses of geostationary and polar satellites?
what are their advantages ?

A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers directly over the...

Answer (1)

Navaneeth K

Dec 1, 2014

If the radius of the earth is to shrink by 1% (mass remains the same) the acceleration due to gravity g on the Earth's surface will increase by how much % ?

This answer has an image. Please click on the question to read more.

Answer (2)

Sanalkumar S

Jan 15, 2015

Please derive the equations for g
a) above earth's surface
b) below earth's surface.

This answer has an image. Please click on the question to read more.

Answer (2)

Amarnathreddy M

Feb 3, 2014

The value of acceleration due to gravity at moon is (1/6) Th of acceleration due to gravity at the surface of the earth and the diameter if the moon is (1/40) of the diameter of the earth. What is the ratio if the escape velocities at moon and on the earth?

This answer has an image. Please click on the question to read more.

Answer (2)

Manu

Dec 1, 2014

Four Particles of equal masses are moving round a circle of radius r ue to thier mutual gravitational attraction. Find the angular velocity of each particle.

Let the four particles of equal masses M move along a circle of radius R under the action of their mutual gravitational attraction.

They align such that they are at the corners of the square and mo...

Answer (1)

Misha Jain

Dec 24, 2014

Two identical thin rings each of radius R are coaxially placed at a distance R. If the masses of rings are m1 and  m2 respetively, then what is the work done in moving a mass m from the centre of one ring to that of the other?

This answer has an image. Please click on the question to read more.

Answer (1)

Navaneeth K

Nov 23, 2014

If earth is one-fourth the present distance from the sun, what would be the duration of the year? 

a) 8 years
b) 4 years 
b) 1/8 year
d) 1/4 year

According to Kepler's third law, t

Answer (1)

Sanalkumar S

Jan 15, 2015

What is the definition of universal gravitational constant?

The gravitational constant is a proportionality constant in Newton's law of gravitation and is commonly denoted by G. it is constant at any place in the universe. The  Val...

Answer (2)

Rohit Jangra

Oct 4, 2014

Calculate the mass and density of earth.

We have the relation F = GmM/R2

Answer (1)

Arjun Sukumaran

Dec 24, 2014

what are the uses of geostationary and polar satellites?
what are their advantages ?

A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers directly over the...

Answer (1)

Navaneeth K

Dec 1, 2014

If the radius of the earth is to shrink by 1% (mass remains the same) the acceleration due to gravity g on the Earth's surface will increase by how much % ?

This answer has an image. Please click on the question to read more.

Answer (2)

Sanalkumar S

Jan 15, 2015

Please derive the equations for g
a) above earth's surface
b) below earth's surface.

This answer has an image. Please click on the question to read more.

Answer (2)

Amarnathreddy M

Feb 3, 2014

The value of acceleration due to gravity at moon is (1/6) Th of acceleration due to gravity at the surface of the earth and the diameter if the moon is (1/40) of the diameter of the earth. What is the ratio if the escape velocities at moon and on the earth?

This answer has an image. Please click on the question to read more.

Answer (2)

Manu

Dec 1, 2014

Four Particles of equal masses are moving round a circle of radius r ue to thier mutual gravitational attraction. Find the angular velocity of each particle.

Let the four particles of equal masses M move along a circle of radius R under the action of their mutual gravitational attraction.

They align such that they are at the corners of the square and mo...

Answer (1)

Misha Jain

Dec 24, 2014

Two identical thin rings each of radius R are coaxially placed at a distance R. If the masses of rings are m1 and  m2 respetively, then what is the work done in moving a mass m from the centre of one ring to that of the other?

This answer has an image. Please click on the question to read more.

Answer (1)

Navaneeth K

Nov 23, 2014

If earth is one-fourth the present distance from the sun, what would be the duration of the year? 

a) 8 years
b) 4 years 
b) 1/8 year
d) 1/4 year

According to Kepler's third law, t

Answer (1)

Sanalkumar S

Jan 15, 2015

What is the definition of universal gravitational constant?

The gravitational constant is a proportionality constant in Newton's law of gravitation and is commonly denoted by G. it is constant at any place in the universe. The  Val...

Answer (2)

Rohit Jangra

Oct 4, 2014

Calculate the mass and density of earth.

We have the relation F = GmM/R2

Answer (1)

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