The acceleration of the moon with respect to earth is 0.0027 m/s–2 and the acceleration of an apple falling on earth's surface is about 10 m/s–2. Assume that the radius of the moon is one-fourth of the earth's radius. If the moon is stopped for an instant and then released, it will fall towards the earth. The initial acceleration of the moon towards the earth will be

1. 10 m s–2

2. 0.0027 m s–2

3. 6.4 m s–2

4. 5.0 m s–2

Subtopic:  Acceleration due to Gravity |
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The acceleration of the moon just before it strikes the earth in the previous question is:

1. 10 m s–2

2. 0.0027 m s–2

3. 6.4 m s–2

4. 5.0 m s–2

Previous question: The acceleration of the moon with respect to earth is 0.0027 m/s–2 and the acceleration of an apple falling on earth's surface is about 10 m/s–2. Assume that the radius of the moon is one-fourth of the earth's radius. If the moon is stopped for an instant and then released, it will fall towards the earth.

Subtopic:  Acceleration due to Gravity |
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Suppose, the acceleration due to gravity at the earth's surface is 10 m s–2 and at the surface of Mars, it is 4.0 m s-2. A 60 kg passenger goes from the earth to Mars in a spaceship moving with a constant velocity. Neglect all other objects in the sky. Which part of the figure best represents the weight (net gravitational force) of the passenger as a function of time.

1. A

2. B

3. C

4. D

Subtopic:  Acceleration due to Gravity |
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Consider a planet in some solar system that has a mass double the mass of the earth and density equal to the average density of the earth. An object weighing W on the earth will weigh

1. W

2. 2W

3. W/2

4. 21/3W at the planet

Subtopic:  Acceleration due to Gravity |
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Take the effect of bulging of earth and its rotation in account. Consider the following statements:

 Statement I: There are points outside the earth where the value of g is equal to its value at the equator. Statement II: There are points outside the earth where the values of g is equal to its value at the poles.

 1 Both Statement I and Statement II are correct 2 Statement I is correct but Statement II is wrong 3 Statement II is correct but Statement I is wrong 4 Both Statement I and Statement II are wrong

Subtopic:  Acceleration due to Gravity |
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