Average force opposing a proton

Click For Summary
SUMMARY

The discussion focuses on calculating the average force opposing a proton's motion as it passes through a metal film. A proton with a mass of 1.67 x 10-27 kg and an initial speed of 5.0 x 106 m/s emerges from the film at a speed of 2.0 x 106 m/s after traveling through a thickness of 0.010 mm. The participants confirm the use of Newton's second law (F=ma) and the kinematic equation Vf2 = Vi2 + 2ax to find the average force. The solution involves calculating acceleration and then applying it to determine the force.

PREREQUISITES
  • Understanding of Newton's second law (F=ma)
  • Familiarity with kinematic equations, specifically Vf2 = Vi2 + 2ax
  • Basic knowledge of particle physics, particularly protons
  • Ability to perform unit conversions, such as mm to meters
NEXT STEPS
  • Calculate the acceleration of the proton using the kinematic equation Vf2 = Vi2 + 2ax
  • Apply the calculated acceleration in Newton's second law to find the average force
  • Explore the implications of force on particle motion in different materials
  • Investigate the effects of varying film thickness on the average force experienced by particles
USEFUL FOR

Physics students, educators, and anyone interested in understanding the dynamics of particle motion through materials, particularly in the context of high-energy physics experiments.

Sandman327
Messages
6
Reaction score
0

Homework Statement



A proton with mass 1.67 X 10-27 kg that has a speed of 5.0 x10[6] m/s passes through a metal film of thickness .010 mm and emerges with a speed of 2.0 x 10[6]m/s. How large an average force opposed its motion through the film?

Homework Equations



I'm thinking Newtons second law F=ma will tie into the problem somehow but I'm not sure what equation to use to bring the velocities into the problem.

The Attempt at a Solution

 
Physics news on Phys.org
Assuming the acceleration is uniform: Vf2 = Vi2 + 2(a)(x)
 
Thanks so the plan is to solve Vf2 = Vi2 + 2(a)(x) for a and then use that value of a to solve Newton's second law?
 
Yes.
 
Thanks I appreciate your help.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

Similar threads

  • · Replies 2 ·
Replies
2
Views
3K
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
9K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 13 ·
Replies
13
Views
2K
  • · Replies 4 ·
Replies
4
Views
5K
  • · Replies 9 ·
Replies
9
Views
8K
Replies
3
Views
5K
  • · Replies 2 ·
Replies
2
Views
2K