Conversion Device: Mechanical to Heat Energy

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Devices that convert mechanical energy to heat energy include brakes and friction-based systems. The discussion highlights that when mechanical energy is dissipated through friction, it generates heat, as illustrated by the example of slapping a cheek. The amount of energy conversion can vary based on the device and the force applied. The conversation also touches on the practical application of this concept in everyday scenarios. Understanding these conversions can be useful in both scientific and practical contexts.
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Is there any specific device to convert mechanical energy to heat energy?
 
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harini_5 said:
Is there any specific device to convert mechanical energy to heat energy?

What are some devices that come to mind for you? How much energy are we talking about?

Is this for homework, BTW? If so, I can move the thread to the Homework Help forums.
 
A brake.
 
if someone slaps somebody on the cheek with his hand, the hand will be stopped (= loose its mechanical energy) and the cheek will warm up a little (= gain heat energy)

try it yourself one day (you might have to repeat it a few times to raise the cheeks temperrature by a measurable amount, so make sure the person you slap knows that it is done in the name of science).
 
comparing a flat solar panel of area 2π r² and a hemisphere of the same area, the hemispherical solar panel would only occupy the area π r² of while the flat panel would occupy an entire 2π r² of land. wouldn't the hemispherical version have the same area of panel exposed to the sun, occupy less land space and can therefore increase the number of panels one land can have fitted? this would increase the power output proportionally as well. when I searched it up I wasn't satisfied with...
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