ch10-p016 - 16. The wheel starts turning from rest (0 = 0)...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
16. The wheel starts turning from rest ( ω 0 = 0) at t = 0, and accelerates uniformly at α > 0, which makes our choice for positive sense of rotation. At t 1 its angular velocity is 1 = +10 rev/s, and at t 2 its angular velocity is 2 = +15 rev/s. Between t 1 and t 2 it turns through Δ θ = 60 rev, where t 2 t 1 = Δ t . (a) We find using Eq. 10-14: 22 2 21 (15 rev/s) (10 rev/s) . 0 4 r e v / s 2(60 rev) ωω =+ Δ ¡ == which we round off to 1.0 rev/s 2 . (b) We find Δ t using Eq. 10-15: () 12 ( 6
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online