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The gravitational potential at the centre of a square of side a when four point masses m each are kept at its vertices will be

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Important Questions on Gravitation

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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 25
Energy required to place a body of mass m from an orbit of radius 2R to 3R is
[Given that M= mass of earth, R= Radius of earth]
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 26
Potential V at a point in space is given by V=x2+y2+z2. Gravitational field at a point x,y,z is
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 27
Three particles each of mass m are placed at the three corners of an equilateral triangle of side a, The work which should be done to increase the sides of the triangle to 2a is
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 28
A body at rest starts from a point at a distance r>R from the center of the Earth. If M and R stand for the mass and the radius of Earth respectively, then the speed of the body when it reaches the Earth surface is
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 29
Given that the gravitation potential on Earth surface is V0. The potential at a point distant half the radius of earth from the centre will be
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 32
The time period of a satellite of the earth is 10 hours. 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?
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 33
A planet is at R distance from sun and its time period of revolution is T. What will be its new time period of revolution if it is brought 0.5R distance closer to sun?
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Gamma Question Bank for Engineering Physics>Chapter 7 - Gravitation>Assignment>Q 34
Which of the following graphs between the square of the time period and cube of the distance of the planet from the sun is correct?