A AA battery is used to power a motor that raises a 10-g pencil tied to a string 33 meters until it is depleted. If 67% of the battery's energy is lost to the surroundings, how much energy was initially stored in the battery?

A AA battery is used to power a motor that raises a 10-g pencil tied to a string 33 meters until it is depleted. If 67% of the battery's energy is lost to the surroundings, how much energy was initially stored in the battery?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 40PE: (a) What is the available energy content, in joules, of a battery that operates a 2.00-W electric...

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Question

5. A AA battery is used to power a motor that raises a 10-g pencil tied to a string 33 meters
until it is depleted. If 67% of the battery's energy is lost to the surroundings, how much
energy was initially stored in the battery?
System/Flow
E, E,
E, E,
Position A
Position B
Energy (J)
Energy (J)

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