Find the potential energy of a system of four particles placed at the vertices square of side 'a' .Also obtain the potential at the center of the square??? Please help me ╥﹏╥.... no ❌google xD.. .. class 11 Physics question
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Answer:
Let four objects are at A,B,C and D of a square of side l
Total potential energy of the system is
−[
1
GM
a
M
b
+
1/
2
GM
a
M
c
+
1
GM
a
M
d
]
∵M
a
=M
b
=M
c
=M
so,
−[
1
GM
2
+
1/
2
GM
2
+
1
GM
2
]
[
1
GM
2
](2+
2
)
This is the potential energy of the system of particles.
(2) It is given that,
Radius r=0.4×10
−10
m
Volume is
V=
3
4
πr
3
V=
3
4
×3.14×(0.4×10
−10
)
3
V=0.26×10
−30
m
3
So, volume of 1 mole of Hydrogen
V=6.023×10
23
×0.26×10
−30
V=1.56×10
−7
m
3
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