Question

Two heavy spheres each of mass 100kg and radius o.1m are placed 1 m apart on a horizontal table. What is the gravitational field and gravitational potential at the mid point of the line joining the centres of the spheres? ​

Answer 1

Explanation:

The gravitational field at the mid-point of the line joining the centers of the two spheres =

(r/2)

2

GM

−

(r/2)

2

GM

=0 N

Gravitational potential at the midpoint of the line joining the centres of the two spheres is V=−

r/2

GM

−

r/2

GM

=−

r

4GM

V=−

0.1

4×6.67×10

−11

×100

=−2.68×10

−7

J/kg