Very Relativity problem(True or False)?

  • Thread starter Thread starter SAT2400
  • Start date Start date
  • Tags Tags
    Relativity
AI Thread Summary
The discussion centers on a relativity problem involving length contraction. A stationary meter stick along the y-axis is observed by a moving observer along the x-axis. The key point is that length contraction occurs only in the direction of motion, meaning the meter stick's length remains unchanged in the y-direction. Therefore, the claim that the moving observer measures the stick as less than 1 meter is false. The conclusion is that the observer will measure the meter stick's length as 1 meter.
SAT2400
Messages
68
Reaction score
0
Very URGENT!Relativity problem(True or False)??

Homework Statement


YOu have a meter stick located at rest along y axis. Another person moving along x-axis
will measure the length of meter stick to be less than 1 meter.

Homework Equations


lorentz contraction


The Attempt at a Solution


I think it's true..but my friend said it's false...Is it true or false?
 
Physics news on Phys.org


I believe an object only experiences contraction in the direction of motion. The y-axis will not contract if the observer is moving in the x-direction.

False ; )
 


so it's false??
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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

Punching a hole in a tape moving at relativistic speed
Replies
26
Views
1K
Series of True or False questions related to Forces and FBDs
Replies
2
Views
2K
Calculate Weight of Block & Meter Stick | Torque Problem Solution
Replies
1
Views
3K
Motion in a Circle: True/False/Less/Greater/Equal
Replies
2
Views
5K
Friction Concepts Homework: True or False Answers
Replies
3
Views
7K
I How many meter sticks are there in this length contraction reasoning?
Replies
12
Views
2K
Relativity and Length: A Simple Homework Question
Replies
7
Views
2K
Basics True or False, Momentum Problem
Replies
12
Views
4K
True/False relativity question.
Replies
3
Views
2K
Theoretical vs measured electrical resistance: Percent error relation
Replies
9
Views
6K

Hot Threads

Recent Insights

Back
Top