A constant retarding torque of 12Nm stops a rollin wheel of diameter 0.8m in a distance...
A constant retarding torque of 12Nm stops a rollin wheel of diameter 0.8m in a distance of 15m within 35s
a) Use work-energy theorem to calculate the initial angular speed when the torque was applied if the wheel's moment of inertia is 0.7kgm^2
Homework Answers
angular displacement traveled
x = 15 / (2 pi 0.4) = 5.9683 rad
using work-energy theorem
T x = 0.5 I w^2
12* 5.9683 = 0.5* 0.7* w^2
w = 14.3 rad/s
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