Question:
If the gravitational force of earth suddenly disappears, then which of the following is correct?
If the gravitational force of earth suddenly disappears, then which of the following is correct?
Updated On: Jun 21, 2022
- weight of the body is zero
- mass of the body is zero
- both mass and weight become zero
- neither the weight nor the mass is zero
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The Correct Option is A
Solution and Explanation
If the gravitational force of earth suddenly disappears, weight of all the bodies will disappear. We experience weight because earth pulls us towards it through its gravitational force. Gravitational force has no effect on mass of any body.
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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].