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प्रश्न
What do you mean by a gravitational constant?
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उत्तर
- From Newton’s law of gravitation,
F = G`("m"_1"m"_2)/"r"^2`
where, G = constant called universal gravitational constant. Its value is 6.67 × 10-11 N m2/kg2. - G = `"Fr"^2/("m"_1"m"_2)`
If m1 = m2 = 1 kg, r = 1 m then F = G.
Hence, the universal gravitational constant is the force of gravitation between two particles of unit mass separated by unit distance.
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संबंधित प्रश्न
Write the answer of the question with reference to laws of gravitation.
State the universal law of gravitation.
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What is the importance of the universal law of gravitation?
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Choose the correct alternative:
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Choose the correct alternative:
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Choose the correct answer from among the given ones:
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Universal law of gravitation states that every object exerts a gravitational force of attraction on every other object. If this is true, why don’t we notice such forces ? Why don’t the two objects in a room move towards each other due to this force ?
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Choose the wrong option.
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Complete the chart below.
| F(N) | M1(kg) | M2(kg) | D(m) |
| (a) | 50 | 84 | 02 |
| 16 × 109 | 1.63 × 1022 | (b) | 34 |
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