Why is my calculation for velocity using time dilation and speed incorrect?

Click For Summary
SUMMARY

The discussion centers on a homework problem involving time dilation and velocity calculations. The participant initially miscalculated the velocity using the equation t=T/(1-(v/c)²)¹/², resulting in an incorrect value of c=37.74. Upon reevaluation, they recognized that the proper time should be expressed as 7.5/v, leading to a correct approach for solving for velocity. This highlights the importance of accurately applying time dilation concepts in relativistic physics.

PREREQUISITES
  • Understanding of special relativity principles
  • Familiarity with time dilation equations
  • Basic algebra skills for solving equations
  • Knowledge of the speed of light (c) as a constant
NEXT STEPS
  • Study the derivation of the time dilation formula in special relativity
  • Practice solving problems involving relativistic velocity calculations
  • Explore the implications of time dilation in real-world scenarios
  • Learn about Lorentz transformations and their applications
USEFUL FOR

Students studying physics, particularly those focusing on special relativity, and educators seeking to clarify concepts related to time dilation and velocity calculations.

seto6
Messages
248
Reaction score
0

Homework Statement


was a home work problem. I am redoing it for practice
im stuck on part c

2zizsdh.jpg

this is the hint for part C
6p3zu0.jpg


Homework Equations



t=T/(1-(v/c)2)1/2

The Attempt at a Solution



my attempt.
i know that from the restaurant to school it will take 15 min in school's frame and ice cream melts in 5min in the car riders frame..so i did

(15/60)=(5/60)*(1-(v/c)2)-1/2
so i solved for v and got c=37.74. which was wrong, do not know where I am going wrong.
 
Physics news on Phys.org
just figured it out

the improper time should be 7.5/v then solving for v should be fine.
 
bump.
 

Similar threads

  • · Replies 18 ·
Replies
18
Views
2K
  • · Replies 15 ·
Replies
15
Views
3K
Replies
15
Views
2K
Replies
19
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 17 ·
Replies
17
Views
4K
Replies
10
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K