Center of mass of two particle system (q45)

In summary, the center of mass of a two particle system is a point that represents the average position of the particles in the system. It is calculated by taking the weighted average of the position vectors of the particles. This concept is important in physics as it helps in understanding the motion and stability of a system and simplifies calculations. The center of mass always lies between the two particles or at the same position as one of the particles if they have equal masses. It can only be located within the system and not outside as this would imply a particle with negative mass.
  • #1
jack1234
133
0
Hi, I do not know how to get started for the following question,
http://tinyurl.com/yueh5m
can somebody help?
 
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  • #2
Start with the mathematical definition of center of mass. Then take a derivative to find the velocity of the center of mass. And another derivative to find its acceleration. Once you see how the acceleration of the center of mass relates to the accelerations of the individual masses, then you can solve this problem.
 
  • #3
Thanks, using the formula Ma_cm = summation of individual ma, has helped me successfully solved the problem. it is c.
 

FAQ: Center of mass of two particle system (q45)

What is the concept of center of mass in a two particle system?

The center of mass of a two particle system is a point that represents the average position of the particles in the system. It is the point where the total mass of the system can be assumed to be concentrated.

How is the center of mass of a two particle system calculated?

The center of mass of a two particle system is calculated by taking the weighted average of the position vectors of the two particles, where the weights are equal to the masses of the particles.

Why is the concept of center of mass important in physics?

The concept of center of mass is important in physics because it helps in understanding the motion and stability of a system. It also simplifies the calculations of complex systems by reducing the number of variables to be considered.

Does the center of mass of a two particle system always lie between the two particles?

Yes, the center of mass of a two particle system always lies between the two particles, or at the same position as one of the particles if they have equal masses. This is because the position of the center of mass is determined by the masses and positions of the particles.

Can the center of mass of a two particle system be located outside the system?

No, the center of mass of a two particle system can only be located within the system. This is because the center of mass represents the average position of the particles in the system, and if it is located outside the system, it would imply that there is a particle with negative mass present.

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