CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
At what height from the surface of earth the gravitation potential and the value of g are -5.4 x 10^{7} J kg^{-2} and 6.0 m/s^{2} respectively? (Take the radius of the earth as 6400 km)
1600 km
1400 km
2000 km
2600 km
D.
2600 km
Gravitational potential at some height h from the surface of the earth is given by,
V = ... (i)
Acceleration due to gravity at some height h from the earth surface can be given as,
... (ii)
From equation (i) and (ii), we get
... (iii)
V = -54 x 10^{7} J kg^{-2}
g' = 6.0 m/s^{2}
Radius of Earth, R = 6400 km
Gravitational potential at some height h from the surface of the earth is given by,
V = ... (i)
Acceleration due to gravity at some height h from the earth surface can be given as,
... (ii)
From equation (i) and (ii), we get
... (iii)
V = -54 x 10^{7} J kg^{-2}
g' = 6.0 m/s^{2}
Radius of Earth, R = 6400 km