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The mass of the moon is about 1.2% of th...

The mass of the moon is about 1.2% of the mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth

A

Is the same

B

Is smaller

C

Is greater

D

Varies with its phase

Text Solution

Verified by Experts

The correct Answer is:
A
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Knowledge Check

  • The mass of moon is 1/81 of the mass of earth. If gravitational force of earth on moon is F, then the gravitational force of moon on earth is

    A
    F/81
    B
    F
    C
    9F
    D
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    A
    will be elliptical
    B
    will not be strictly elliptical because the total gravitational force on it not central
    C
    is not elliptical but will necessarily be a closed curve.
    D
    deviates considerably from being elliptical due to influence of planets other than earth.

  • The mass of the moon is 1/81 of the earth but the gravitational pull is 1/6 of the earth. It is due to the fact that

    A
    The radius of the moon is `81/6` of the earth
    B
    The radius of the earth is `9/sqrt(6)` of the moon
    C
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    D
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