A wheel rotating at 12 rev s - 1 is brought to rest in 6 s . The average angular deceleration in rad s - 2 of the wheel during this process is

Question

A wheel rotating at 12 rev s - 1 is brought to rest in 6 s . The average angular deceleration in rad s - 2 of the wheel during this process is, 4 π, 4, 72, π

MARKS App · Accepted Answer

ω i = 12 × 2 π rad s - 1 = 24 π rad s - 1 ω f = 0 ∆ t = 6 s As ω f = ω i + α ∆ t We have, α = − ω i Δ t = - 24 π 6 = - 4 π rad sec - 2

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