Last Updated On [03-11-2023]
Two blocks of masses 3 kg and 6 kg are connected by an ideal spring and are placed on a frictionless horizontal surface. The 3 kg block is imparted a speed of 2 m/s towards left. (Consider left as positive direction)
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Column-I |
Column- II |
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(A) |
When the velocity of the 3 kg block is |
(p) |
The velocity of centre of mass is |
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(B) |
When the speed of the 3 kg block is |
(q) |
Deformation of the spring is zero |
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(C) |
When the speed of the 3 kg block is minimum |
(r) |
Deformation of the spring is maximum |
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(D) |
When the velocity of the 6 kg block is maximum |
(s) |
Both the blocks are at rest with respect to each other |
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CODES : |
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A |
B |
C |
D |
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a) |
a |
b,c |
a,b,c,d |
a,c,d |
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b) |
a,c,d |
a,b,c,d |
a |
a,b |
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c) |
a,b |
a,c,d |
a |
a,b,c,d |
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d) |
a |
a,b,c,d |
a,b |
a,c,d |
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Question ID - 101020 :- Two blocks of masses 3 kg and 6 kg are connected by an ideal spring and are placed on a frictionless horizontal surface. The 3 kg block is imparted a speed of 2 m/s towards left. (Consider left as positive direction)
Column-I
Column- II
(A)
When the velocity of the 3 kg block is 
m/s
(p)
The velocity of centre of mass is 
m/s
(B)
When the speed of the 3 kg block is 
m/s
(q)
Deformation of the spring is zero
(C)
When the speed of the 3 kg block is minimum
(r)
Deformation of the spring is maximum
(D)
When the velocity of the 6 kg block is maximum
(s)
Both the blocks are at rest with respect to each other
CODES :
A
B
C
D
a)
a
b,c
a,b,c,d
a,c,d
b)
a,c,d
a,b,c,d
a
a,b
c)
a,b
a,c,d
a
a,b,c,d
d)
a
a,b,c,d
a,b
a,c,d
Two blocks of masses 3 kg and 6 kg are connected by an ideal spring and are placed on a frictionless horizontal surface. The 3 kg block is imparted a speed of 2 m/s towards left. (Consider left as positive direction)
|
Column-I |
Column- II |
||||||||
|
(A) |
When the velocity of the 3 kg block is |
(p) |
The velocity of centre of mass is |
||||||
|
(B) |
When the speed of the 3 kg block is |
(q) |
Deformation of the spring is zero |
||||||
|
(C) |
When the speed of the 3 kg block is minimum |
(r) |
Deformation of the spring is maximum |
||||||
|
(D) |
When the velocity of the 6 kg block is maximum |
(s) |
Both the blocks are at rest with respect to each other |
||||||
|
CODES : |
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A |
B |
C |
D |
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a) |
a |
b,c |
a,b,c,d |
a,c,d |
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b) |
a,c,d |
a,b,c,d |
a |
a,b |
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c) |
a,b |
a,c,d |
a |
a,b,c,d |
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d) |
a |
a,b,c,d |
a,b |
a,c,d |
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(b)
So velocity of centre of mass is always 2/3 m/s i. If velocity of 3 kg block is 2/3 m/s, then velocity of 6 kg block is also 2/3 m/s. In this situation, spring will be maximum elongated. Their relative velocity will be zero ii. When the speed is 2/3 m/s, velocity can be 2/3 m/s, if
Let deformation in spring be
iii. Minimum speed of 3 kg block is zero. At this speed, spring will have some deformation, but not maximum iv. Speed of 6 kg block will be maximum when spring returns to its normal length after passing through elongation |
. Then
Next Question :
In the following question there is a relationship exists between the words/letters/numbers given to the left of the proportionality (: :) sign. The same relationship exists between the words/letters/numbers given to the right of the sign (: :) of which one is missing. Find the missing one from the given alternatives.
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Smoke : Pollution : : War : ? |
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(a) |
Destruction |
(b) |
Friendship |
(c) |
Victory |
(d) |
Peace |
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