Finding Speed & Momentum of a Moving Particle with Double Rest Mass

AI Thread Summary
A moving particle has a rest mass that is double its kinetic energy, leading to a discussion on how to find its speed and momentum using relativity principles. The problem is considered basic for those familiar with advanced physics, suggesting that understanding classical mechanics is essential for tackling it. Participants emphasize the importance of applying the correct formulas and encourage sharing any specific difficulties encountered. The relationship between rest mass and kinetic energy is highlighted, with a focus on using the equation m₀c² = 2E_k. Overall, the discussion aims to clarify the problem-solving process in relativity.
hype_chicky
Messages
34
Reaction score
0
a moving particle has a rest mass which is double its kinetic energy. Find its speed and momentum..=)
 
Physics news on Phys.org
this is the most basic problem in relativity... are you having a hard time understanding relativity or you just can't figure out how to do this problem...
relativity usually puts in a advance physics class. since you are learning relativity now, i believe you have already suffer through the classical mechanic and electrostatic and thermal physics those basic stuff... and you have already develope a skill to deal with physics problems. This problem is not tricky at all. plug the number in appropiate formulas and the answer will shown up instantly... if you really can't do this problem, at least show me some of your work or let me know which part you stuck in...
 
okay so the rest mass is doubel the kinetic energy so i have Ek = mc^2/ sqare root 1-V^2/C^2 - mc^2...yet once agnin i DO NOT understand how to fit it in..as u can see physics is not one of my favourite classes =)
 
Okay.So its rest mass (mulitplied by c^squared to give energy) is 2 times greater than the KE.Can u write the RHS from this equation?
m_{0}c^{2}=2...

What should be instead of those points...??

Daniel.
 

Thread 'Rolling without slipping on a curved surface'

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 .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

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...
View full post »

Similar threads

Two Particles Connected by Massless Rod: Dynamics Analysis
Replies
5
Views
2K
Calculate the speed and angle of the center of mass before a collision
Replies
3
Views
918
Angular momentum of a disk about an axis parallel to center of mass axis
Replies
5
Views
3K
Mass, acceleration and velocity
Replies
3
Views
2K
Calculating rest mass and energy (in an inertial frame)
Replies
5
Views
2K
Is This Momentum Conservation Equation Correct for a Gas Ejection Problem?
Replies
7
Views
2K
Using Momentum Principle to Find Ratio of Speeds?
Replies
4
Views
1K
Nuclear Physics help please (alpha decay of a Po-216 atom)
Replies
1
Views
3K
Momentum: instantaneous or average?
Replies
9
Views
1K
System of particles, impulse and conservation of angular momentum
Replies
23
Views
2K

Hot Threads

Recent Insights

Back
Top