Three psrticles A,Band C are situated at the verices of an equilateral triangle ABC of side a at t=0 each of the particles moves with constant speed v .A always has its velocity along AB,B along BC and C .At what time will these particles meet each other
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Answer:
Velocity of A is v along AB. The velocity of B is along BC.Its component
along BA is vcos60=
2
v
. Thus, the separation AB decreases at the rate
v−(−
2
v
)=
2
3v
Since, this rate is constant, the time taken in reducing the separation AB from d to zero is
t=
(3v/2)
d
=
3v
2d
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