ch10-p020 - 20. (a) Using Eq. 10-6, the angular velocity at...

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20. (a) Using Eq. 10-6, the angular velocity at t = 5.0s is ω θ == = = d dt d dt t tt 50 2 030 2 030 50 30 .. .( . ) ( . ) . c h rad / s. (b) Eq. 10-18 gives the linear speed at t = 5.0s: (3.0 rad/s)(10 m) 30 m/s. vr = (c) The angular acceleration is, from Eq. 10-8, α = d dt d dt t (. ) . . 060 060rad/s 2 Then, the tangential acceleration at
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