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March 28, 2017

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A ceiling fan starting from rest reaches an angular velocity of 30 rev/sec in 5 sec. What is the angular displacement of the fan during these 5 sec?

Can you show me the steps need to figure this question out?

Thanks!

  • Physics - ,

    φ=ω₀t±εt²/2
    ω=ω₀±εt
    ω=2πn
    ω₀=2πn₀=0

    φ=εt²/2
    2πn= εt
    ε=2πn/t
    φ=εt²/2=2πn t²/2t= πn t=3.14•30•5=...(rad)

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