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puchie1225
03.12.2019 •
Physics
Astudent holds a bike wheel and starts it spinning with an initial angular speed of 9.0 rotations per second. the wheel is subject to some friction, so it gradually slows down. in the 10.0 s period following the inital spin, the bike wheel undergoes 65.0 complete rotations. assuming the frictional torque remains constant, how much more time δ t s will it take the bike wheel to come to a complete stop?
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Ответ:
Explanation:
As we know that the angular acceleration of the wheel due to friction is constant
so we can use kinematics
so we have
now time required to completely stop the wheel is given as
now time required to stop the wheel is given as
Ответ: