In the figure below, we saw that tides on the Earth are due to the variation of

Question

In the figure below, we saw that tides on the Earth are due to the variation of the Moon's gravitational force with distance. Find the approximate ratio of the Moon's gravitational force on two portions of the ocean, one nearest the Moon and one on the opposite side of the Earth.

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FMoon, far FMoon, near In the figure below, we saw that tides on the Earth are due to the variation of the Moon's gravitational force with distance. Find the approximate ratio of the Moon's gravitational force on two portions of the ocean, one nearest the Moon and one on the opposite side of the Earth.

Explanation / Answer

Gravitational force b/w earth and moon when they are far=
F=6.6 x 10^-11 x7.36 x 10^22 x 6x 10^24/3.82 x 3.82 x 10^16=19.99 x 10^19 N
(M of moon)g2= 19.99 x 10^19 ,g2=2.72 x 10^-3 m/s2

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