Question

What is radius of curvature at any instant .Derive its formula..................

Answer 1

A particle is projeted with a velocity 'u' at an angle
θ
θ
with the horizontal. Find the radius of curvature of the parabola traced out by the particle at the point where the velocity makes an angle
θ
/
2
θ2
with the horizontal.
I got
u
2
u2
/gcos
θ
/
2
θ2