Question

a meter scale is kept in a satellite moving with velocity 0.6w.r.t earth. calculate the length of the rod as measured by the observer from earth

Answer 1

$\text{Lorentz factor according to}$

$l = l_0\sqrt{1-\frac{v^2}{c^2}}$

$v = 0.6c\text{ where } c\text{ speed of light }$

$l = l_0\sqrt{1-\frac{0.36c^2}{c^2}}= l_0*0.8 = 0.8m$

Answer:0.8m