# #

A coin is inserted into a donation machine. It leaves the entry track with a velocity of $${{params.vo}}$$ m/s horizontally in a funnel, making an angle $$\alpha$$. Determine the angle $$\theta$$ which its velocity makes with the horizontal as the coin passes bottom of the funnel. Assume the coin always remains spinning on its thin edge. $$r = {{params.r1}}$$ m, The radius of the opening at the bottom is $$r2 = {{params.r2}}$$ m, $$\alpha= {{params.ad}}^\circ$$

## Part 1#

Please enter in a numeric value in $$^\circ$$.