reducing hammer weight

[William Monroe]

Yes JD,

As you (and others) point out, it was not 1.5g.  Forgive my decimal 
placement.  I DID measure a difference of 0.15g; 10mm thick molding; the 
molding composition is lead - isn't that what everyone uses now? ;-]

I will double check my measures tomorrow, just for assurance.

William R. Monroe


> At 22:47 -0500 8/9/08, William Monroe wrote:
>
>>Yes, I've done a couple samples and the difference is fairly small. An 
>>1/8" hole yields a net reduction in weight of about 1.5g.
>
> Impossible. A cylinder of 1/8" diameter (radius (0.15875 cm.) 9 mm. long 
> in a wood of relative density 0.8 (such as a heavy maple) will have a mass 
> of 0.057 grams, which you would need a pretty accurate scientific balance 
> to measure.
>
>
> pi * ((0.15875) ^ 2) * 0.9 * 0.8 = 0.057
>
>
> This would make a difference of just over a quarter of a gram at the 
> touch.
>
> To put it another way, 1.5 grams is the mass of a cube of water of side 
> 11.4 mm, and the density of wood is considerably less than that of water.
>
> Any detectable difference achieved by drilling a hole in the moulding will 
> be due to the human imagination rather than to any natural law.
>
> JD