Questions
A particle is moving in a circle of raidus R in such a way that at any instant the total acceleration makes an angle of with radius. Initial speed of particle is . The time taken to complete the first revolution is:
detailed solution
Correct option is B
Total acceleration makes an angle of 450 with radius,i.e., tangential acceleration = radial acceleration.Rα = Rω2or α = ω2or dωdt = ω2or dωω2 = dtor ∫ω0ωdωω2 = ∫0tdtω = ω01-ω0tor dθdt = ω01-ω0tor ∫02πdθ = ∫0tω0dt1-ω0tor t = 1ω0(1-e-2π) = Rv0(1-e-2π)Talk to our academic expert!
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