Calculating Flywheel Speed in a Hybrid Vehicle: A Homework Challenge

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In a hybrid vehicle, the flywheel captures energy during braking, and the problem involves calculating its speed when the car, weighing 850kg, stops. The flywheel has a mass-moment of inertia of 14kgm², and the assumption is made for 100% efficiency. Participants express confusion over which equations to use, with suggestions including uniform angular acceleration and centripetal force. The key concept discussed is the conversion of the car's kinetic energy into the rotational kinetic energy of the flywheel. Assistance is sought for solving the problem, indicating a need for clarification on Newton's laws and energy equations.
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Homework Statement



In a hybrid vehicle a flywheel is used to capture the energy of the car during braking. If the car has a total mass of 850kg and the flywheel has a mass-moment of inertia equal to 14kgm2 determine the speed of the flywheel when the car stops for traffic lights in an urban area (you may assume 100% efficiency).

Homework Equations



Not sure

I am thinking an equation for Uniform Angular Acceleration.

Or

Centripetal force

I am stuck on what one to use

The Attempt at a Solution



If i can get some hints, i would like to have a stab at this one, i am just 100% lost in Newtons laws and other equations...
 
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Think of energy. The kinetic energy of the car has to turn into rotational kinetic energy of the flywheel.
 
I will post what i have done in a few hours, thanks for the hint...
 
Hi could you post your results or someone offer some help as i am having problems with the exact same question.

thank you
 

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