to find d potential for d sphere wid cavity just consider it as a combination of two spheres (hollow sphere as)one wid -ve density and d complete sphere wid +ve density
Hey i am not sure but my answers are very bad......
Something like 19/4 V at A .
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From J.R.R. Tolkien's 'The Lord of the Rings':
All that is gold does not glitter
Not all who wander are lost
The old that is strong does not wither,
Deep roots are not reached by frost.
From ashes a fire shall be woken
From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king.
Now the mass that has been introduced is = 2M as it is
given that it is 16 times denser.
Now original radius = R
Introduced rad = R/2
So net potential = GM/R - G(M/8)/R/2 + G(2M)/R =
19GM/R = 19 V/4
I applied the principle of superposition.
Is my method correct?and where was the problem
from??
Rest ones i hope we can get by that formula in H.C.Verma
GM/2a^3 (3a^2 - r^2) and subtract and add as has
been given in the problem...
Did you get the answers by the same method??
Sorry for being late.Didn't see yesterday that you have
posted the answers...
__________________________________________________________________________________________________________
From J.R.R. Tolkien's 'The Lord of the Rings':
All that is gold does not glitter
Not all who wander are lost
The old that is strong does not wither,
Deep roots are not reached by frost.
From ashes a fire shall be woken
From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king.
Moderation Team
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