The intensity of gravitational field at a point situated at a distance of 8000 km from the centre of the earth is 6N / kg. The gravitational potential at that point is – (in Joule / kg) :
Answer & explanation
Correct answer: option 3
Gravitational intensity at point P, l = GM/r2 and gravitational potential v = -GM/r
\(\Rightarrow V = I r\)
\(\Rightarrow V = 6*8000 \)
V = 4.8 x 107 J/kg