Two balls are suspended on parallel threads of the same length so that they touch contact each
other. The mass of the first ball is
m1 = 0.2kg
and that of the second
m2 =100g
. The first ball is
deflected so that its centre of gravity rises to a height of
4.5cm
and is then released. At what
height will the balls rise to after the collision if: (i) the impact is elastic, (ii) the impact is
inelastic?
Answers: 1
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