Aflywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. the gasoline burned in a 443-mile trip in a typical midsize car produces about 2.67 x 10^9 j of energy. how fast would a 38.3-kg flywheel with a radius of 0.363 m have to rotate to store this much energy? give your answer in rev/min.

The angular velocity is

Solution:

As per the question:

Energy produced by gasoline, E =

Mass of the flywheel, m =

Radius of the flywheel, R = 0.363 m

Now,

The moment of Inertia of the disc is given by:

Now, the angular velocity can be calculated as:

Now,

1 revolution =

Now,

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

insects!

explanation: