Two particles A and B are moving on two concentric circles of radii R1 and R2 with equal angular speed ω. At t=0, their positions and direction of motion are shown in the figure :
The relative velocity −→vA−−→vB at t=π2ω is given by :
A
ω(R1+R2)^i
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B
−ω(R1+R2)^i
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C
ω(R2−R1)^i
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D
ω(R1−R2)^i
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Solution
The correct option is Cω(R2−R1)^i Using, θ=ωt we get,