Electric Field/Charge cycle, rotating mass problem

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  • #1
hbeaton
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An infinite line charge l is located along the z axis. A mass m that carries a charge q whose sign is opposite to that of l is in a circular orbit in the xy plane about the line charge. If m = 0.28 kg, q = 1.1 mC, l = 3.3 nC/m, and R = 0.25 m (the radius of the orbit), find the period.

Help!

My apologies for not following the given format in advance, I am assisting someone and have very little physics knowledge of my own. Please treat as a t00l.

Thanks,
-H
 
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  • #2
Hello hbeaton, welcome to Physics Forums.

I'll suggest asking the student the same that we ask in our homework template:

1. What equations are, or might be, relevant here? The key words here are "line charge" and "circular orbit". Find equations that have something to do with those, if necessary look through the textbook. If the person is studying electric charge right now, the circular orbits would be in an earlier chapter of the book.

2. Finding the equations, writing them down and looking at them, can help with the next part: making an attempt to solve the problem. Even saying what you think might be involved in solving it, even if that's wrong, can be helpful in getting started.

Hope that helps to get the ball rolling.
 

FAQ: Electric Field/Charge cycle, rotating mass problem

What is an electric field and how is it related to charge?

The electric field is a physical field that surrounds electrically charged particles and exerts a force on other charged particles within its range. It is created by the presence of electric charge and its strength is directly proportional to the amount of charge present.

How does a rotating mass create an electric field?

A rotating mass creates an electric field due to the principle of electromagnetism. When a charged particle moves, it creates a magnetic field, and when a magnetic field changes, it creates an electric field. This is known as electromagnetic induction and is the basis for how rotating masses, such as generators, produce electricity.

How does the electric field/charge cycle work?

The electric field/charge cycle refers to the continuous exchange of energy between electric fields and charged particles. Electric fields exert a force on charged particles, causing them to move. As the charged particles move, they create their own electric fields, which can then interact with other charged particles. This cycle continues as long as there is a presence of electric charge and an electric field.

What is the relationship between electric field and potential energy?

Electric fields and potential energy are closely related. The electric field represents the force acting on a charged particle, and the potential energy represents the work done by that force. The direction of the electric field is always in the direction of decreasing potential energy. In other words, a charged particle will naturally move in the direction of the electric field to reach a lower potential energy state.

How does the rotating mass problem impact electric fields?

The rotating mass problem can impact electric fields in a few ways. First, the rotation of a mass can create an electric field, as mentioned earlier. Additionally, the motion of rotating masses can also affect the strength and direction of existing electric fields. This can have implications for various applications, such as in generators or motors, where the rotation of masses is purposely controlled to manipulate electric fields for energy production or mechanical work.

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