A flywheel is a solid disk that rotates about an axis that is perpendicular to t
ID: 2210062 • Letter: A
Question
A flywheel 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 324-mile trip in a typical midsize car produces about 4.65 x 109 J of energy. How fast would a 28.4-kg flywheel with a radius of 0.495 m have to rotate to store this much energy? Give your answer in rev/min.Explanation / Answer
A flywheel 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 499-mile trip in a typical midsize car produces about 1.60 x 109 J of energy. How fast would a 40.5-kg flywheel with a radius of 0.438 m have to rotate to store this much energy? Give your answer in rev/min. A flywheel 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 499-mile trip in a typical midsize car produces about 1.60 x 109 J of energy. How fast would a 40.5-kg flywheel with a radius of 0.438 m have to rotate to store this much energy? Give your answer in rev/min. A flywheel 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 499-mile trip in a typical midsize car produces about 1.60 x 109 J of energy. How fast would a 40.5-kg flywheel with a radius of 0.438 m have to rotate to store this much energy? Give your answer in rev/min. R U asking us to do your homework for you? It is a word problem. First you have to extract what is given. Then you have to locate the formulas you need to convert what is given to the answer you are seeking.Given:
The trip distance is irrelevant as we are given the amount of energy expended
= 1.6 x 109 J of energy. (I assume that the 109 is an exponent)
Flywheel mass 40.5kg
Flywheel radius .438 meters
Solve for rev/min
Rotational formula = http://hyperphysics.phy-astr.gsu.edu/hba…
Source(s):
Actually the best flywheels are not solid disks but will have most of their mass on the outer ring. Hint: But calling it a disk makes it easier to work the formula. R U asking us to do your homework for you? It is a word problem. First you have to extract what is given. Then you have to locate the formulas you need to convert what is given to the answer you are seeking.Given:
The trip distance is irrelevant as we are given the amount of energy expended
= 1.6 x 109 J of energy. (I assume that the 109 is an exponent)
Flywheel mass 40.5kg
Flywheel radius .438 meters
Solve for rev/min
Rotational formula = http://hyperphysics.phy-astr.gsu.edu/hba…
Source(s):
Actually the best flywheels are not solid disks but will have most of their mass on the outer ring. Hint: But calling it a disk makes it easier to work the formula. R U asking us to do your homework for you? It is a word problem. First you have to extract what is given. Then you have to locate the formulas you need to convert what is given to the answer you are seeking.Given:
The trip distance is irrelevant as we are given the amount of energy expended
= 1.6 x 109 J of energy. (I assume that the 109 is an exponent)
Flywheel mass 40.5kg
Flywheel radius .438 meters
Solve for rev/min
Rotational formula = http://hyperphysics.phy-astr.gsu.edu/hba… Actually the best flywheels are not solid disks but will have most of their mass on the outer ring. Hint: But calling it a disk makes it easier to work the formula.
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