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JEE Main Physics Class 11 Work, Energy and Power Part 2 Questions
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© examsnet.com
Question : 68
Total: 100
Two blocks of masses
10
kg
and
30
kg
are placed on the same straight line with coordinates
(
0
,
0
)
cm
and
(
x
,
0
)
cm
respectively. The block of
10
kg
is moved on the same line through a distance of
6
cm
towards the other block. The distance through which the block of
30
kg
must be moved to keep the position of centre of mass of the system unchanged is :
[27-Jun-2022-Shift-1]
4
cm
towards the
10
kg
block
2
cm
away from the
10
kg
block
2
cm
towards the
10
kg
block
4
cm
away from the
10
kg
block
Validate
Solution:
For COM to remain unchanged,
m
1
x
1
=
m
2
x
2
⇒
10
×
6
=
30
×
x
2
⇒
x
2
=
2
cm
towards
10
kg
block.
© examsnet.com
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