V1=180rev/min * 6.28rad/rev * 1min/60s =
18.84 Rad/s.
V2 = 140/180 * 18.84 = 14.65 Rad/s.
a = (V2-V1)/t = (14.65-18.84)/20 = -0.209 Rad/s^2.
b. V3 = V1 + a*t = 0
t = -V1/a = -18.84/-0.209 = 90 s. To
stop.
a. V3^2 = V1^2 + 2a*d = 0
d = -V1^2/2a = -(18.84^2)/-0.418 = 849.2
Radians.
849.2Rad * 1rev/6.28Rad = 135.2 rev.
before it stops.
A flywheel is making 180 r.p.m. and after 20 seconds it is running at 140 r.p.m. How many revolutions
will it make, and what time will elapse before it stops, if the retardation is uniform ?
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angular distance also can b found by s= (vi+vf) x t and the devided by 2
thanks
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