Four particles each of mass M, are located at the vertices of a square with side L. The
gravitational potential due to this at the centre of the square is
1.
2.
3. zero
4.
The gravitational field due to a mass distribution is in the x-direction. (K is a
constant). Taking the gravitational potential to be zero at infinity, its value at a distance x
is
1. K/x
2. K/2x
3.
4. K/2
At what height from the surface of earth the gravitation potential and the value of g are and respectively? (Take, the radius of earth as 6400 km.)
(a) 1600 km (b) 1400 km
(c) 2000 km (d) 2600 km
Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1m, 2m, 4m, 8m, respectively from the origin. The resulting gravitational potential due to this system at the origin will be
(a)-G
(b)-8/3G
(c)-4/3G
(d)-4G
A particle of mass M is situated at the centre of a spherical shell of mass M and radius a.The gravitational potential at a point situated at a/2 distance from the centre will be
1. 2.
3. 4.