A thin uniform annular disc (see figure) of mass 
has outer radius 
and inner radius 
. The work required to take a unit mass from point 
on its axis to infinity is
.png)
a)
b)
c)
d)
has outer radius and inner radius . The work required to take a unit mass from point on its axis to infinity isa)
b)
c)
d)
Question ID - 54949 | SaraNextGen Top Answer A thin uniform annular disc (see figure) of mass has outer radius and inner radius . The work required to take a unit mass from point on its axis to infinity is
a)
b)
c)
d)
A thin uniform annular disc (see figure) of mass has outer radius and inner radius . The work required to take a unit mass from point on its axis to infinity is
|
a) |
|
b) |
|
c) |
|
d) |
|
1 Answer
127 votes
Answer Key / Explanation : (a) -
(a)
Potential at point 
will be obtained by in integration as given below. Let 
be the mass of small rings as shown
.png)
127 votes
Answer Link
127