Compute all parts of given problem:
Problem: A big dog has a torso that is approximately circular, with a radius of 16cm. At the midpoint of a shake, the dog's fur is moving at a remarkable 2.5m/s.
Part A: What force is required to keep a 10 mg water droplet moving in this circular arc?
Part B: What is the ratio of this force to the weight of a droplet?
I need help to find the ratio of this force to the weight of a droplet.