Question
Download Solution PDFThe value of universal gravitational constant ( G ) is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Newton's law of gravitation: The gravitational force between two objects is directly proportional to the product of masses of the objects and inversely proportional to the distance between two mass.
i.e., \(F = \frac{{GMm}}{{{R^2}}}\)
Where G = universal gravitational constant, M = Mass of the 1st body m = Mass of the 2nd body, and R = Distance between the bodies
EXPLANATION:
The value of the universal gravitational constant is G = 6.67 × 10-11 N × m2/kg2
Hence option 1 is correct.
MISTAKE POINTS:
We have to see the units of the given value very carefully:
As we know, the unit of force (F) = N, r2 = m2 and mass (M) = kg
Therefore the unit of gravitational constant (G) is
\(\Rightarrow G = Nm^2{kg^{-2}}\)
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