G
George Privon
Guest
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Tom Kunich wrote:
| "Café de Colombia" <[email protected]> wrote in message news:[email protected]...
|
|>When the helmet breaks, it clearly does absorb a significant amount
|
| of
|
|>energy that would have otherwise been transfered to the head. Your statement that "When the helmet
|>breaks it essentially absorbs NO
|
| energy"
|
|>is absolutely untrue from a physics standpoint (so where did the
|
| energy
|
|>come from to break the helmet if not the fall itself, Tom?).
|
|
| Then please be the first to show us the numbers. You'll find that a breaking helmet absorbs only
| about 1/100th of the energy that the collapsing foam does. If you think that is significant then
| perhaps you are one of those people with the 8 lb head.
The breakage doesn't directly absorb much energy. However, the pieces that move in different
directions gain momemtum and so they do remove momentum from the head-ground system, thus lestening
the impact on the head.
george
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"Alcohol and Calculus don't mix. Never drink and derive." -----BEGIN PGP SIGNATURE----- Version:
GnuPG v1.2.0 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
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Tom Kunich wrote:
| "Café de Colombia" <[email protected]> wrote in message news:[email protected]...
|
|>When the helmet breaks, it clearly does absorb a significant amount
|
| of
|
|>energy that would have otherwise been transfered to the head. Your statement that "When the helmet
|>breaks it essentially absorbs NO
|
| energy"
|
|>is absolutely untrue from a physics standpoint (so where did the
|
| energy
|
|>come from to break the helmet if not the fall itself, Tom?).
|
|
| Then please be the first to show us the numbers. You'll find that a breaking helmet absorbs only
| about 1/100th of the energy that the collapsing foam does. If you think that is significant then
| perhaps you are one of those people with the 8 lb head.
The breakage doesn't directly absorb much energy. However, the pieces that move in different
directions gain momemtum and so they do remove momentum from the head-ground system, thus lestening
the impact on the head.
george
- --
[email protected]
- --
http://privon.com
- --
"Alcohol and Calculus don't mix. Never drink and derive." -----BEGIN PGP SIGNATURE----- Version:
GnuPG v1.2.0 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQE+cS9NNyfm0mDgbJ8RAn/GAJ9rBxP4KUrTo2tAlwkd7rsi4nlbFACfYovJ 12KAPtkBJG5MEDsrM+T6klw= =n/Yq
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