Determine the coordinate of the center of gravity of the three coins.?
Determine the coordinates of the center of gravity of three identical coins positioned at the corners of a square with each side measuring 10.0 cm.
1 Answers
You can compute the X and Y coordinates separately.
Let the origin be at the central coin. Then one coin is at <10, 0> and the other is at <0, 10)
The formula for the center of mass is:
(sum of Mi Ri) / (sum of Mi)
http://en.wikipedia.org/wiki/Center_of_mass
So Rx = (M 0 + M 0 + M 10) / (3 M)
and Ry = (M 10 + M 0 + M 0) / (3 M)
where the center of mass is <Rx, Ry>
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