Last Updated On 23-10-2022 - By Sara
A uniform rod of mass 
and length 
is placed over a smooth horizontal surface along the 
-axis and is at rest as shown in Figure. An impulsive force 
is applied for a small time 
along 
-direction at point
. The 
-coordinate of end 
of the rod when the rod become parallel to 
-axis for the first time is [initially, the coordinate of centre of mass of the rod is 
.png)
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a) |
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b) |
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c) |
|
d) |
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Question ID - 100226 :- A uniform rod of mass and length is placed over a smooth horizontal surface along the -axis and is at rest as shown in Figure. An impulsive force is applied for a small time along -direction at point . The -coordinate of end of the rod when the rod become parallel to -axis for the first time is [initially, the coordinate of centre of mass of the rod is
a)
b)
c)
d)
s
A uniform rod of mass and length is placed over a smooth horizontal surface along the -axis and is at rest as shown in Figure. An impulsive force is applied for a small time along -direction at point . The -coordinate of end of the rod when the rod become parallel to -axis for the first time is [initially, the coordinate of centre of mass of the rod is
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a) |
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b) |
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c) |
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d) |
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(d) As torque =change in angular momentum
and Dividing Eqs. (i) and (ii), we get
Using Displacement of CM is and Dividing, we get Coordination of |
(linear momentum) …(i)
(angular momentum) …(ii)
will be 
Next Question :
Two men ‘
’ and ‘
’ are standing on a plank. ‘
’ is at the middle of the plank and 
is at the left end of the plank. Lower surface of the plank is smooth. System is initially at rest and masses are as shown in fig. ‘
’ and ‘
’ start moving such that the position of 
remains fixed with respect to ground, then ‘
’ meets 
Then the point where 
meets
is located at
.png)
|
a) |
The middle of the plank |
b) |
30 cm from the left end of the plank |
|
c) |
The right end of the plank |
d) |
None of these |
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