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Throwing and Catching at Same Height

14. The accel...

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14. The acceleration of moon with respect to earth is 0.0027ms-2 and acceleration of an apple falling on earth surface is about 10ms-2. Assume that the radius of the moon is one fourth of the earth radius. If the moon is stopped for an instant and then released ,it will fall towards the earth . Calculate 1. The initial acceleration of the moon towards the earth will be. 2. The acceleration of the moon just before it strikes the earth

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Q. The acceleration of moon with respect to earth is 0⋅0027 m s⁻² and the acceleration of an apple falling on earth' 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
(a) 10 m s⁻²
(b) 0⋅0027 m s⁻²
(c) 6⋅4 m s⁻²
(d) 5⋅0 m s⁻².

Q. Acceleration due to gravity on the moon is

1 / 6 t h

of the acceleration due to gravity on the earth. If the ratio of densities of the earth and the moon is

5 / 3

, then radius on the moon in terms of radius of earth will be

Q. An astronaut on moon measure acceleration due to gravity to be

1.7 m s^{- 2}

. He knows that the radius of moon is about

0.27

times that of earth. what is his estimate of the ratio of the mass of earth to the of moon ? The acceleration due to gravity on earth is

9.8 m s^{- 2}

Q. The acceleration due to gravity on the moon is only one sixth that of earth, If the earth moon are assumed to have same density. The ratio of the radii of moon and earth will be

Q. The radius of the Moon is about one-fourth that of the Earth and acceleration due to gravity on the Moon is about one-sixth that on the Earth. From this we can conclude that the ratio of the mass of Earth in the mass of the Moon is about___________.

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