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JEE Main202120 Jul 2021Evening ShiftPhysicsRotational MotionActual

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

Correct answer

200

Step-by-step solution

ω f = ω 0 + α t α = 1200 × 6 θ = ω 0 t + 1 2 α t 2 = 600 × 10 60 + 1 2 × 1200 × 6 × 1 36 θ = 200

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