InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Gravitational constant and Gravitational acceleration: |
|
Answer» Gravitational constant (G): i. Gravitational constant is the force of attraction between two unit masses placed at unit distance apart form each other. ii. It has SI unit `Nm^(2)//kg^(2)`, while CGS unit is dyne `cm^(2)//g^(2)`. iii. It is always denoted by G. Its. S.I. value is`6.673xx10^(-11)Nm^(2)//kg^(2)`, while in CGS, it is `6.673xx10^(-8)` dyne `cm^(2)//g^(2)`. v.Its value is fixed and does not change with conditions, hence it is called universal constant. Gravitationa acceleration (g) i. The uniform acceleration produced in a freely falling body due to the gravitational force of the Earth is called gravitation acceleration. (ii). It has SI is `m//s^(2)` while CGS unit is `cm//s^(2)` (iii) It is alwyas denoted by g. (iv) It S.I. value is `9.77m//s^(2)`, while is CGS, it is 977 `cm//s^(2)`. (v). The value of g depends on various factors like altitude, depth, shape etc. |
|