The radius of the earth shrinks by 1%. The accelerationdue to gravity on the earth's surface would (massremaining constant):
2.
If F1 is the magnitude of the force exerted on earth bymoon and F2 is the magnitude of force exerted on moonby earth then :
3.
The gravitational force of attraction between twospherical bodies, each of mass 100 kg, if the distancebetween their centres is 100 m, is :(G = 6.67 x 10-11 Nm2 kg-2)
4.
A particle is fired vertically upwards with a speed ofv = ?0.8 ve. If the radius of the earth is Re then themaximum height attained by the particle will be:
5.
A planet has radius and mass, both half of those of theearth, then the value of g on that planet will be :
6.
A body is projected vertically from the earth's surfacewith velocity equal to half of the escape velocity.Maximum height reached by the body is :
