An electric fan is set on its HIGH setting. After the Low push button is depressed, the angular speed of the fan blades decreases to a value of 8.00x10^2 rev/min in 1.75sec. The deceleration is 42.0 rad/s^2. Determine the initial angular speed of the blades in rev/min

Question

Physics

Lashonda227

Mar 11, 2019, 3:31:10 PM

14

An electric fan is set on its HIGH setting. After the Low push button is depressed, the angular speed of the fan blades decreases to a value of 8.00x10^2 rev/min in 1.75sec. The deceleration is 42.0 rad/s^2. Determine the initial angular speed of the blades in rev/min

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(1) Answers

Answer 1 · 2019-03-11T23:29:03+03:00

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here. a=Δω/Δt a=2π*Δf/Δt a=2π*(f2-f1)/Δt f1=f2-a*Δt/2π f2=800/60 rev/sec a=-42 rad/sec^2 Δt=1.75sec so f1=25 rev/sec f1=1500 rev/min