Question

A railway track is banked for a speed v, by making
the height of the outer rail h higher than that of the
inner rail. The distance between the rails is d. The
radius of curvature of the track is r.
h
O
v2
12
ту
O tan (sin
ħ
sin-
02
-
d
rg
tan
h
) -
d
h
v2
=
T
dg​

Answer 1

it's in not my book I forgot I think so it's easy but ask someone else