Last Updated On 01-06-2023 - By Jeesha Sara
Block 
of mass 
=2 kg is connected to another block 
of mass 
kg with a string and a spring of force constant
N/m as shown in fig. Initially, spring is compressed to 10 cm and whole system is moving on a smooth surface with a velocity 
=1m/s. At any time,thread is burnt, the velocity of block 
,when 
is having maximum velocity w.r.t. ground,is
.png)
|
a) |
Zero |
b) |
1 m/s |
c) |
3m/s |
d) |
None of these |
Question ID - 100032 :- Block of mass =2 kg is connected to another block of mass kg with a string and a spring of force constant N/m as shown in fig. Initially, spring is compressed to 10 cm and whole system is moving on a smooth surface with a velocity =1m/s. At any time,thread is burnt, the velocity of block ,when is having maximum velocity w.r.t. ground,is
a)
Zero
b)
1 m/s
c)
3m/s
d)
None of these
Block of mass =2 kg is connected to another block of mass kg with a string and a spring of force constant N/m as shown in fig. Initially, spring is compressed to 10 cm and whole system is moving on a smooth surface with a velocity =1m/s. At any time,thread is burnt, the velocity of block ,when is having maximum velocity w.r.t. ground,is
|
a) |
Zero |
b) |
1 m/s |
c) |
3m/s |
d) |
None of these |
(c)
The velocity of 
will be maximum when spring comes to its natural length.Let at that time their velocities are 
and
as shown
.png)
Conservation of momentum:
(i)
Conservation of energy:
(ii)
From Eqs. (i) and (ii),
m/s, 
or 
The second solution is possible
Next Question :
In the question, a letter series is given with one term missing shown by question mark(?). The term is one of the alternatives among the four groups of letters given under it. Find the right alternative.
|
A, D, G, J, ? |
|||||||
|
(a) |
I |
(b) |
M |
(c) |
X |
(d) |
None of these |
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