Magnetic force on a moving charge particle with friction force acting on it

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Homework Help Overview

The problem involves a charged particle moving in a magnetic field while experiencing friction. The particle is initially moving along the +y axis, and the magnetic field is oriented along the +z axis. The task is to determine the x-coordinate of the particle when it comes to a stop, given the frictional force acting on it.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • One participant mentions finding the total path moved by the particle but expresses uncertainty about how to derive the x-coordinate from that information. Another suggests using Newton's second law in vector form and integrating as a potential approach. Additionally, some participants discuss the use of differential equations and complex numbers to find velocity functions over time.

Discussion Status

The discussion includes various approaches to the problem, with some participants sharing their solutions while others are exploring different methods. There is no explicit consensus on a single approach, but hints and suggestions for further exploration have been provided.

Contextual Notes

Participants note that providing complete solutions is not permitted, which may influence the depth of the discussion and the types of guidance offered.

siddscool19
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Homework Statement



A "q" charge particle is moving along +y axis with velocity V0 starting from Origin. A friction force is acting on the charge particle " f= -(alpha)V(Vector) ".A constant magnetic field of magnitude B0 acting along +Z axis. The mass of the particle is m. Find the x co-ordinate of the particle when it stops.

Homework Equations





The Attempt at a Solution



I Have found that the total path moved by the particle is mV0/(alpha)

But I don't know how to find x coordinate with it.
 
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There is a quick way to solve this problem: write down the Newton 2nd law equation in vector form and integrate it :wink:
 
I have solved the problem. I am just too lazy to type the WHOLE thing out here. The solution is kind of long. Basically, get the general velocity along X axis and Y axis as a function of time.
To obtain this, in the penultimate step, you will get a differential equation that you will have to solve using Complex numbers.
In the end, the velocities will be something of the type v0*[e(^(-constant))]*cos(wt), where w is the angular frequency.
 
IEVaibhov said:
I have solved the problem. I am just too lazy to type the WHOLE thing out here.

You are not even allowed to write whole solution. you can just give hints.
 

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