Last Updated On [03-11-2023]
A mass of 2.9 kg is suspended from a string of length 50cm and is at rest. Another body of mass 100g which is moving horizontally with a velocity of 150 m/s strikes it.Afterstriking the two bodies combinetogether. The tension in the string,when it makes an angle of 
with the vertical is (Take
)
a)
135.3 N
b)
165.7N
c)
142N
d)
90N
A mass of 2.9 kg is suspended from a string of length 50cm and is at rest. Another body of mass 100g which is moving horizontally with a velocity of 150 m/s strikes it.Afterstriking the two bodies combinetogether. The tension in the string,when it makes an angle of with the vertical is (Take )
a)
135.3 N
b)
165.7N
c)
142N
d)
90N
Question ID - 100497 :-
A mass of 2.9 kg is suspended from a string of length 50cm and is at rest. Another body of mass 100g which is moving horizontally with a velocity of 150 m/s strikes it.Afterstriking the two bodies combinetogether. The tension in the string,when it makes an angle of with the vertical is (Take )
a)
135.3 N
b)
165.7N
c)
142N
d)
90N
|
A mass of 2.9 kg is suspended from a string of length 50cm and is at rest. Another body of mass 100g which is moving horizontally with a velocity of 150 m/s strikes it.Afterstriking the two bodies combinetogether. The tension in the string,when it makes an angle of |
|||||||
|
a) |
135.3 N |
b) |
165.7N |
c) |
142N |
d) |
90N |
(a)
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Applying the law of conservation of linear momentum,
Or
If 
is the speed of the combined mass at the instant when the string makes an angle 
with the vertical, then
(i)
Applying the law of conservation of mechanical energy, we have
Or 
Or 
(ii)
Solving for 
we get 
Putting this value in Eq. (i),we get
Next Question :
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A body is hanging from a rigid support by an inextensible string of length |
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|
a) |
|
b) |
3 |
c) |
2 |
d) |
None of these |
It is struck inelastically by an identical body of mass 
moving with horizontal velocity 
the tension in the string increases just after striking by
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