TP 10.20

Given: w₀ = 3850 rpm

            w = 0

            t =  10.2 s

Find: (a) a = ?

w₀ = (3850 rpm)(2p rad/1 rev)(1 min/60 s) = 403 rad/s

w= w₀ + a t

a =  (w- w₀)/ t = (0 - 403 rad/s)(10.2 s) =  - 39.5 rad/s²

            (b) Dq - ?

w²= w₀² + 2 a Dq

Dq = (w²- w₀²)/(2 a)

Dq = ( 0² - (403 rad/s)²)/(2 (-39.5 rad/s²)) = 2082 rad = 331 rev