This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Sarah, If you add mass to the hammer, keep same force on key (yes, Don, it's a = torque when you multiply it by the key radius), then the action will = accelerate less. That means less energy in the key and wippen (we = didn't change their inertias). So if we have the same total energy, = less in the key and wippen, then MORE must have gone into the key, not = the same amount.=20 Don, Yes. Mostly. Keep in mind that angular momentum is just the integral = of all the ((1/2)*m*v^2)'s, and angular velocity (av) is just = velocity/radius. Linear and rotational motion ARE related. If you = replace v in 1/2*m*v^2 with av*r, you get 1/2*m*r^2*av^2, which is the = formula for rotational inertia for that bit of mass. This does not = contradict the fact that that bit of matter's instantaneous energy is = 1/2*m*v^2. -Mark ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/8b/1a/19/53/attachment.htm ---------------------- multipart/alternative attachment--
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