Recent content by Hamza Abbasi

Thank you for guiding :smile: . Problem solved !

Why is stress zero?

Oh yes! I wrote equation 1 wrong ! Got it :smile::smile:

Yes , I am sure . Question was about strain/

Homework Statement A rod of length ##L_o## is kept on a friction-less surface. The coefficient of linear expansion for the material of the rod is ##\alpha##. The the temperature of the rod is increased by ##\Delta T## the strain developed in the rod will be? Homework Equations $$ \Delta L=...

Thank you I get in it now ! You are very patient , thank you for tolerating me ! :smile::smile: Good Luck

Okay ! I think I get it. The velocity v2 already include negative sign and magnitude in it ? I don't need to put an extra negative sign in it ,Right?

Sorry I don't understand why we are subtracting the velocities? Don't they add up when the two bodies are moving in opposite direction relative to each other?

This is what I am imaging

Sorry I don't get it. In the reference frame of B , B would be stationary . Both the planet and spaceship would be approaching it from positive X direction. This makes the velocity of the planet to be +v2 . And the relative velocity in B's frame of reference in Newtonian physics will be , v1+v2.

My solution for velocity is correct then?

I guess that would be v1+v2 . Right?

Apart from that question , which tool you are using to write equations in an interactive manner?

No ! I don't have clue , what is wrong in my calculation :(

Yes sorry , that was a typo. I meant (v1+v2)/(1+(v1v2/c2))