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JEE Main Physics Class 11 System of Particles and Rotational Motion Part 1 Questions
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© examsnet.com
Question : 91
Total: 100
A '
T
shaped object with dimensions shown in the figure,is lying on a smooth floor. A force '
→
F
' is applied at the point
P
parallel to
A
B
,
such that the object has only the translational motion without rotation. Find the location of
P
with respect to
C
.
[2005]
3
2
l
2
3
l
l
4
3
l
Validate
Solution:
To have translational motion without rotation, the force
→
F
has to be applied at centre of mass. i.e. the point '
P
'has to be at the centre of mass
Taking point
C
at the origin position, positions of
y
,
and
y
2
are
r
1
=
2
l
,
r
2
=
l
and
m
l
=
m
and
m
2
=
2
m
y
=
m
1
y
1
+
m
2
y
2
m
1
+
m
2
=
m
×
2
l
+
2
m
×
l
3
m
=
4
l
3
© examsnet.com
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