Solving Charged Particles: Mass & Charge

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Homework Help Overview

The discussion revolves around a problem involving two equally charged particles that are released from rest, with given accelerations and the mass of one particle. The participants are exploring how to determine the mass of the second particle and the magnitude of the charge of each particle using the principles of electrostatics and Newton's laws of motion.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants are considering the relationship between mass, acceleration, and force, with some suggesting the use of Coulomb's law to find the forces acting on the particles. There is uncertainty about how to calculate the force and whether to sum forces for both particles.

Discussion Status

Some participants have provided insights into the problem, such as recognizing that the force on one particle is due to the other and that the charges are equal, which leads to a single equation with one unknown. However, there is still confusion regarding the calculation of force and how to proceed with the problem.

Contextual Notes

Participants express uncertainty about the appropriate force to use in their calculations and the implications of the problem's setup, indicating a need for clarification on these points.

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Two equally charged particles are held 3.8 10-3 m apart and then released from rest. The initial acceleration of the first particle is observed to be 5.0 m/s2 and that of the second to be 9.0 m/s2. The mass of the first particle is 6.3 10-7 kg.
(a) What is the mass of the second particle?

(b) What is the magnitude of the charge of each particle?

For A, i got 3.5e-7, which is the correct answer.
However,for B, i wasn't sure of what to do.

Do you simply do Mass time Acceleration for each particle. Then add those together to get the F?
After that, you would use
F=kqq/r-squared?
 
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Does anyone know how to do this problem?
 
Can someone help me, please?
 
Can anyone do this problem?
 
that seems right, but i don't know about adding the forces
 
i just don't know what to use for the force, i can do everything from there. So, really i only need to know what to put in for force.
 
the force on the first object is the Coulomb force from the second. Since the question explicitly stated that the charge of the two are equal, you have one equation and one unknown.
 
could u show me how to get the force, I'm still not understanding..
 

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