Solving for Center of Mass: Equation and Explanation for 2 and 3 Masses

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SUMMARY

The center of mass (COM) for two masses is calculated using the equation COM = (m1*x1 + m2*x2) / (m1 + m2), where m1 and m2 are the masses and x1 and x2 are their respective positions. For three masses, the equation extends to COM = (m1*x1 + m2*x2 + m3*x3) / (m1 + m2 + m3). This method applies the principle of mass distribution along a linear axis, allowing for accurate determination of the center of mass in both cases. The provided resource, http://www.ottisoft.com/samplact/Center%20of%20mass.htm, offers further insights into this calculation.

PREREQUISITES
  • Understanding of basic physics concepts, specifically mass and position.
  • Familiarity with algebraic manipulation of equations.
  • Knowledge of the principle of moments in physics.
  • Basic understanding of linear motion and equilibrium.
NEXT STEPS
  • Study the derivation of the center of mass equations for multiple bodies.
  • Explore applications of center of mass in real-world physics problems.
  • Learn about the impact of varying mass distributions on the center of mass.
  • Investigate the role of center of mass in rotational dynamics.
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone involved in engineering or design requiring an understanding of mass distribution and balance.

AngelsMind
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I'm having trouble finding the equation to find the center of mass between 2 masses. I'm guessing it's something like add the masses and find a ratio between them and apply it to the distance between their own center of masses but I'm not sure. can someone give me the equation and an explanation for each variable? Also what would you do to find the center of mass for 3 individual masses.
 
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Check this site http://www.ottisoft.com/samplact/Center%20of%20mass.htm

CraigD, AMInstP
www.cymek.com
 
Last edited by a moderator:
thanks a lot
 

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