Two pendulums each of length 
are initially situated as shown in fig. The first pendulum is released and strikes the second. Assume that the collision is completely inelastic and neglect the mass of the string and any frictional effects. How high does the centre of mass rise after the collision?
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Question ID - 100173 | SaraNextGen Answer Two pendulums each of length are initially situated as shown in fig. The first pendulum is released and strikes the second. Assume that the collision is completely inelastic and neglect the mass of the string and any frictional effects. How high does the centre of mass rise after the collision?
a)
b)
c)
d)
Two pendulums each of length are initially situated as shown in fig. The first pendulum is released and strikes the second. Assume that the collision is completely inelastic and neglect the mass of the string and any frictional effects. How high does the centre of mass rise after the collision?
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a) |
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b) |
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c) |
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d) |
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(a)
Applying the law of conservation of momentum,
(i)
Where 
is the velocity with which 
collides with 
Therefore,
Now,let the centre of mass rise through a height 
after collision. In this case, the kinetic energy of 
system is converted into potential energy at maximum height 
