Three masses located on a x - y plane have the following coordinates; a 5 kg mass has coordinates given by (2, -3) m; a 4 kg mass has coordinates (-4, 2) m; a 2 kg mass has coordinates (3, 3) m. Find the coordinates of the center of mass to two significant figures. Explain how you got your answer.
2006-10-19 17:10:30 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The general formula is X = (sum of moments)/(sum of weights)
So, for the x direction, X = (5*2 + 4*(-4) + 2*3)/(5 + 4 + 2) = 0.0
Do the same for Y and you'll be done.
2006-10-19 17:30:22 · answer #1 · answered by Steve 7 · 0⤊ 0⤋
(moment about the y axis divided by total mass)
x = (5*2+-4*4+2*3)/11 = 0
(moment about the x axis divided by total mass)
y = (-5*3 + 4*2 +2*3)/11 = -1/11
x,y = (0,-0.09)
2006-10-20 00:25:48 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋
do your math homework yourself
2006-10-20 00:40:16 · answer #3 · answered by toweljedi42 2 · 0⤊ 0⤋