John Hartman rote: <<A light hammer moving at a faster speed could have the equivalent force upon >impact with the string as a heavier hammer moving slower.>> Certainly it could arrive at the string with the same amount of force (F=m*a). But having less inertia, it would be brought to a quicker halt by the stiff and still wire, and with a quicker halt, being less able to displace the string. Bill Ballard, RPT "Out here on the food chain, you either diet, NH Chapt, PTG die, or dine" .......folksinger Mark Graham
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