RRB Junior Engineer / DMS / CMA 2019 · Question 46 of 3719
Physics - Units and Measurements
-2 N m² kg is the Sl unit of G-the universal gravitation constant. In the same way dimensions of 'G' can be calculated, which come out to be M-1 L3 T-2 (where M corresponds to mass, L to length, and T to time). • Gravitational constant: It is equal to the force of attraction between two bodies of unit mass separated by a unit distance. -2 Its value is 6.67529 x 10-11 N m² kg . • Gravitational force: • It is the weakest of four fundamental force in nature. • Gravitation is a long-range force extending up to infinity. • Graviton is the exchange particle giving rise to the force of attraction.
Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-2) — ixambee compilation with answer key and solutions · reliable-secondary
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