A body rotating with an angular|CIRCULAR MOTION|JEEMAIN 2021

JEE MAIN 2021

20-07-21 S2

Question

A body rotating with an angular speed of 600 rpm is uniformly accelerated to 1800 rpm in 10 sec. The number of rotations made in the process is___.

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Solution

ωf = ω₀ + αt , α = 1200 × 6 θ = ω₀t + ½αt² = 600 × 10/60 + ½ × 1200 × 6 × 1/36 θ = 200

Question Tags

JEE Main

Physics

Medium

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