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NCERT GUJARATI-GRAVITATION-EXERCISES
- Acceleration due to gravity is independent of mass of the earth/mass o...
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- The formula –G Mm(1//r(2) – 1//r(1)) is more/less accurate than the f...
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- Suppose there existed a planet that went around the Sun twice as fast ...
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- Let us assume that our galaxy consists of 2.5 x× 10^(11) stars each of...
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- If the zero of potential energy is at infinity, the total energy of an...
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- The energy required to launch an orbiting satellite out of earth’s gra...
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- Does the escape speed of a body from the earth depend on (a) the mass ...
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- A comet orbits the sun in a highly elliptical orbit. Does the comet ha...
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- Which of the following symptoms is likely to afflict an astronaut in s...
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- For the above problem, the direction of the gravitational intensity at...
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- A rocket is fired from the earth towards the sun. At what distance fro...
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- How will you ‘weigh the sun’, that is estimate its mass? The mean orbi...
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- A saturn year is 29.5 times the earth year. How far is the saturn from...
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- A body weighs 63 N on the surface of the earth. What is the gravitatio...
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- Assuming the earth to be a sphere of uniform mass density, how much wo...
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- A rocket is fired vertically with a speed of 5 km s^(-1) from the eart...
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- The escape speed of a projectile on the earth’s surface is 11.2 km s^(...
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- A satellite orbits the earth at a height of 400 km above the surface. ...
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- Two stars each of one solar mass (= 2 xx 10^(30) kg) are approaching...
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- Two heavy spheres each of mass 100 kg and radius 0.10 m are placed 1....
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