Question:

A satellite launch station should be

Updated On: Jul 5, 2022
  • near the equatorial region
  • near the polar region
  • on the polar axis
  • all the locations are equally good
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The Correct Option is C

Solution and Explanation

At equator, g is minimum relative to all the other points on the surface of the Earth. When a spacecraft is launched into the orbit, it should end up spinning around the Earth quickly enough not to be pulled back in by the Earth's gravity. If a ship is launched from the equator, it goes up into space, and it is also moving around the Earth at the same speed it was moving before launching. This is because of inertia. This speed will help the spacecraft keep up a good enough speed to stay in the orbit.
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Concepts Used:

Gravitation

In mechanics, the universal force of attraction acting between all matter is known as Gravity, also called gravitation, . It is the weakest known force in nature.

Newton’s Law of Gravitation

According to Newton’s law of gravitation, “Every particle in the universe attracts every other particle with a force whose magnitude is,

  • F ∝ (M1M2) . . . . (1)
  • (F ∝ 1/r2) . . . . (2)

On combining equations (1) and (2) we get,

F ∝ M1M2/r2

F = G × [M1M2]/r2 . . . . (7)

Or, f(r) = GM1M2/r2

The dimension formula of G is [M-1L3T-2].