i don\'t know where i start. A futuristic design for a car is to have a largedis

Question

i don't know where i start.
A futuristic design for a car is to have a largedisk-like flywheel within the car storing kinetic energy. Theflywheel has mass 370kg with a radius of 0.50 m and can rotate upto 520 rev/s. Assuming all of this stored kinetic energy could betrasferred to the linear velocity of the 2800 kg car, find themaximum attainable speed of the car. i don't know where i start.
A futuristic design for a car is to have a largedisk-like flywheel within the car storing kinetic energy. Theflywheel has mass 370kg with a radius of 0.50 m and can rotate upto 520 rev/s. Assuming all of this stored kinetic energy could betrasferred to the linear velocity of the 2800 kg car, find themaximum attainable speed of the car.

Explanation / Answer

Mass of wheel m = 370 kg

Radius r= 0.5 m

Angular speed w = 520 rev / s

                           = 520 * 2(pi) rad /s

                           = 3267.25 rad/ s

Kinetic energy of the wheel K = ( 1/ 2) I w^2

Where I = moment of inertia of the wheel = ( 1/ 2) mr ^2

              = 46.25 kg m^ 2

Plug the values we get K = 246.85 * 10 ^ 6 J

This is equal to kinetic energy of the car

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