How Much Work is Done on a Charged Particle Between Two Equipotential Surfaces?

AI Thread Summary
The discussion centers on calculating the work done by an outside force on a charged particle moving between two equipotential surfaces with different voltages. The particle transitions from a potential of 5650V at surface A to 7850V at surface B, with a mass of 5.00*10^-2 kg and a charge of +4.00*10^-5 C. The initial speed at surface A is 2.00 m/s, and the final speed at surface B is 3.00 m/s. Participants seek guidance on the relevant equations for work and kinetic energy changes involved in this scenario. Understanding these concepts is crucial for solving the problem effectively.
silver_gry
Messages
3
Reaction score
0

Homework Statement



Equipotential surface A has a potential of 5650V, while equipotential surface B has a potential of 7850V. A particle has a mass of 5.00*10^-2kg and a charge of +4.00*10^-5. The particle has a speed of 2.00 m/s on the surface A. An outside force is applied to the particle and it moves to surface B, arriving there with a speed of 3.00 m/s. How much work is done by the outside force in moving the particle from A to B?

Homework Equations





The Attempt at a Solution


Can someone please help me with this problem? I really need help with how to start this problem and what equations to use! Please help.
 
Physics news on Phys.org
What is the equation for relating Work and equipotential surfaces?

What changes in kinetic energy have occurred?
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top