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Ram and Shyam are two students of ACME c...

Ram and Shyam are two students of ACME couse. One day after the test, they start discussing about the motion of the moon around the earth. The moon is known to take 27 days in competing a circular orbit.
In the figure, the moon moves counterclockwise (ABCD) around the earth. Ram asks Shyam : "What is the direction of the moon's instantaneous velocity at point D"?

A

`+x`

B

`+y`

C

`-x`

D

`-y`

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The correct Answer is:
A
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Ram and Shyam are two students of ACME couse. One day after the test, they start discussing about the motion of the moon around the earth. The moon is known to take 27 days in competing a circular orbit. In the figure, the moon moves counterclockwise (ABCD) around the earth. Shyam asks Ram : "What is the direction of the moon's average velocity for one quarter of an orbit, starting at C and ending at D "?

Ram and Shyam are two students of ACME couse. One day after the test, they start discussing about the motion of the moon around the earth. The moon is known to take 27 days in competing a circular orbit. In the figure, the moon moves counterclockwise (ABCD) around the earth. Ram asks Shyam : "What is the direction of the impulse of gravitational force due to earth on moon for one half of an orbit, starting at C and ending at A"?

The moon takes about 27.3 days to revolve round the earth in a nearly circular orbit of radius 3.84xx10^5 k. Calculate the mass of the earth from these datas.

Moon takes 27.3 days to complete one revolution around the earth , in a cirular orbit of radius 3.9xx10^(5) km. Calculate the centripetal acceleration of the moon .

The moon is about 384000 km from earth and its path around the earth is nearly circular. Find the length of path described by moon in one complete revolution. (Take pi = 3.14 )

Moon takes nearly 27 days to revolve around earth. If the mass od moon is two-third of its present mass, then what will be the period of revolution of moon around earth. Assume that values of all other things remain unchanged.

The planet Mars has two moons. Phobos and Delmos (i) phobos has period 7 hours, 39 minutes and an orbital radius of 9.4 xx 10^(3) km . Calculate the mass of Mars. (ii) Assume that Earth and mars move in a circular orbit around the sun, with the martian orbit being 1.52 times the orbital radius of the Earth. What is the length of the martian year in days? (G = 6.67 xx 10^(-11) Nm^(2) kg^(-2))

The period of moon around the earth is 27.3 days and radius of the orbit is 3.9 xx 10^(5) km . G=6.67 xx 10^(-11) Nm^(-2)kg^(-2) , find the mass of the earth.

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