NEET | 2016GravitationHard

Question

At what height from the surface of earth the gravitation potential and the value of g are -5.4 × 107 J kg-2 and 6.0 ms-2 respectively? Take the radius of earth as 6400 km:

Options

A.

2600 km

B.

1600 km

C.

1400 km

D.

2000 km

Solution

V=GMR+h=-5.4×107
g=GM(R+h)2=6
∴ 5.46×107=R+h
∴ a ×106=6.4×106+h
∴ h = 2600 km

Create a free account to view solution

View Solution Free
Topic: Gravitation·Practice all Gravitation questions

More Gravitation Questions

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be ...A satellite whose mass is M, is revolving in circular orbit of radius r around the earth. Time of revolution of satellit...The condition for a uniform spherical mass m of radius r to be a black hole is :[G =gravitational constant and g = accel...A hollow spherical shell is compressed to half its radius. the gravitational potential at the centre...Escape velocity of a body when projected from the earth’s surface is 11.2km/sec. If it is projected at an angle of 50o...