4. With O as the origin of the
candinate axis the and
coordinates of the centre
of mass of the system of
particles shown in the
figure may be given as
Here
and
represent the masses of the particles
Answers
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0
Answer:
Explanation:
(x
1
,y
1
)=(0,0),m
1
=3KG
(x
2
,y
2
)=(1,2),m
2
=8KG
(x
3
,y
3
)=(2,1),m
3
=4KG
x
ˉ
=
m
1
+m
2
+m
3
m
1
x
1
+m
2
x
2
+m
3
x
3
=
3+8+4
3×0+8×1+4×2
=
15
0+8+8
x
ˉ
=
15
16
y
ˉ
=
m
1
+m
2
+m
3
m
1
y
1
+m
2
y
2
+m
3
y
3
=
3+8+4
3×0+8×2+4×1
y
ˉ
=
15
20
(
x
ˉ
,
y
ˉ
)=(
15
16
,
15
20
)
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