Why did the designer choose this particular combination of materials? The metal parts of the torch must conduct electric current if the torch is to function, but they must also be able to stand up to physical forces. The spring holding the cells in place should stay springy, while the parts of the switch must make good electrical contact and be undamaged by repeated use.
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In the sentence above, what does it mean by "must also be able to stand up to physical forces."?
please explan! :)
thanks
^
In the sentence above, what does it mean by "must also be able to stand up to physical forces."?
please explan! :)
thanks
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Many forces apply to the torch.
The spring needed to keep good contact is trying to push the ends of the torch apart.
When you hold the torch, you are holding it in the middle somewhere. the forces of gravity are trying to bend it like a banana.
And by merely holding it your hand is attempting to crush the torch. It must withstand this.
And has already been mentioned there are shock loadings any time you pick it up or put it down.
Let alone drop it.
These are just some of the forces that the structure of the torch must withstand.
The spring needed to keep good contact is trying to push the ends of the torch apart.
When you hold the torch, you are holding it in the middle somewhere. the forces of gravity are trying to bend it like a banana.
And by merely holding it your hand is attempting to crush the torch. It must withstand this.
And has already been mentioned there are shock loadings any time you pick it up or put it down.
Let alone drop it.
These are just some of the forces that the structure of the torch must withstand.
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If you drop the torch, will it shatter because the materials are brittle?