While fishing, you get bored and start to swing a sinker weight around in a circle below you on a 0.25-m piece of fishing line. The weight makes a complete circle every 0.50 sec. What is the angle that the fishing line makes with the vertical?

Answer 1

Centripetal acceleration, Ac (horizontal)
= (1/2)v²/r m/s²
Acceleration due to gravity, g (vertical)
= 9.8 m/s²

Angle with vertical, θ
= tan^-1(Ac/g)

Answer 2

76.1°