Question

(v)
..42
42
Q. 7. (a) Define surface tension and surface energy......
(b) Describe how would you determine the Surface Tension by the Ripple
Method ?.
Q. 8. (a) Derive an expression for the gravitational potential at a point (1)
outside, (ii) on the surface and (iii) inside a solid sphere. ....
...47
(b) Hence find gravitational field (attraction) at these points and show it
is proportional to the distance from the centre of the sphere for a point inside it.
..47
Q. 9. Find the gravitational potential and attraction due to a spherical shell
bounded by spheres of radii a and b at a point (i) inside the shell, (ii) outside the
shell and (iii) between the two surfaces.
... 50
1
.
D.
Youne modulus Y the​

Answer 1

Answer:

Explanation: 47 only