# Sample Problem Force And Motion 11

Sample Problem Force And Motion 11

In a 1901 circus performance, All Dare Devil Dialog introduced the stunt of riding a bicycle in a loop-the-loop . As sum in that the loop is a circle with radius .

SOLUTION: A Key Idea in analyzing Diavolo’ s stunt is to assume that he and his bicycle travel through the top of the loop as a single particle in uniform circular motion.

Another Key Idea is that if the particle has the least speed y needed to remain in contact, then it is on the verge of losing contact with the loop (falling away from the loop),

Diavolo made certain that his speed at the top of the loop was normal force N;(m you (from the always upright seat) as you greater than 5.1 m/s so that he did not lose contact with the loop ‘pass through (a) the highest point and (b) the lowest point and fall away from it.

CHECKPOINT 4: When you ride in a Ferris wheel at constant speed, what are the directions of your acceleration  and the normal force N;(m you (from the always upright seat) as you pass through (a) the highest point and (b) the lowest point of the ride?