A railway tank wagon with its 2m diameter and 6m long horizontal cylindrical body, half full of petrol is driven around

[answerhappygod]

A railway tank wagon with its 2m diameter and
6m long horizontal cylindrical body, half full of
petrol is driven around a curve of radius 100m, at
a speed of 8.33 m/s. The curve runs smoothly into
a straight track and the train maintains a constant
speed. Find the angular amplitude and frequency
of subsequent oscillation of the petrol due to this
change of motion. Neglect viscosity and consider
petrol as a solid semi cylinder sliding inside the
tank. Given: tan–1 (0.07) ª 4º