Angular velocity...need some help!
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Angular velocity...need some help!

[From: ] [author: ] [Date: 13-02-28] [Hit: ]
5+4.8= 9.8[s]-a.b.......
http://assets4.pinimg.com/upload/3777394…

The angular velocity (in rpm) of the blade of a blender is given in the figure.

A) If theta = 0 rad at t = 0 s, what is the blade's angular position at t = 20 s?

B) At what time has the blade completed 20 full revolutions?

-
250rpm= 250/60= 4.167rps
100rpm= 100/60= 1.667rps
(A) 4.167*10+1.667*5= 50[rad]
(B) 20/4.167= 4.8s , 5+4.8= 9.8[s]

-
a. 1rad/s
b. 20s
1
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