On 07/22/2020 11:52 PM, John Dammeyer wrote:
But does the accel value in F=ma have to be gravity? And if not, what then?
No! G and weight in Lbs are convenient units because we
live on earth. They are useless anywhere else.
But, they are familiar to anyone who lives here.
mass is a constant property of matter, anywhere in the
universe, at least as long as you stay away from
relativistic velocities. And, the same for acceleration. G
is just a unit conversion to other units.
m/s^2 is a universal unit. So, the acceleration on a
machine part can be measured and expressed completely
without reference to the earth.
Jon
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