Questions
The 3 kg block is projected along the frictionless surface with a velocity of 2 m/s as shown in figure. What will be the velocity of 3 kg block when 6 kg block will be moving with same velocity as the centre of mass of the blocks.
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Correct option is C
VC=velocity of centre of mass =3×26+3m/s=23m/s∴ 6×23+3×V=(6+3)×VC⇒V=13[9×23−6×23]ms=23 msSimilar Questions
If fig four identical spheres of equal mass m are
suspended by wires of equal length /, so that all spheres are almost touching to each other. If the sphere 1 is released from the horizontal position and
all collisions are elastic, the velocity of sphere 4 iust after collision is
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