10)
point about which the summation of moments of masses in the system is
zero
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Answered by
1
Answer:
I recently came across the definition of the Center of Mass of a system as the point about which the first moment of mass is zero. Further, it defined ...
Top answer · 6 votes
Answered by
1
Answer:
Correct option is
D
zero
Using
r
=
M
m
1
r
1
+m
2
r
2
+m
3
r
3
Let origin be the centre of mass of the body which is represented by C. i.e
r
=0
⟹m
1
r
1
+m
2
r
2
+m
3
r
3
=0
Now net moment about C,
τ
C
=m
1
g(
r
1
)+m
2
g(
r
2
)+m
3
g(
r
3
)
τ
C
=g[m
1
(
r
1
)+m
2
(
r
2
)+m
3
(
r
3
)]=0
Hence sum of moment of all the particles in the system about COM is always Zero.
solution
Explanation:
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