# A car goes around a vertical circle (Uniform Circular Motion)

by Chandasouk
Tags: circle, circular, motion, uniform, vertical
 P: 165 1. The problem statement, all variables and given/known data A small remote-control car with a mass of 1.51 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5.00 m. What is the magnitude of the normal force exerted on the car by the walls of the cylinder at point A (at the bottom of the vertical circle)? What is the magnitude of the normal force exerted on the car by the walls of the cylinder at point B (at the top of the vertical circle)? Do I utilize Fnet = ma which would give me 43.488N as Fnet, but I do not see how that would help? I don't know what to do.
 P: 328 Try drawing a force diagram when the car in at the bottom of the cylinder and when its at the top of the cylinder.
 P: 165 For Part A, it would just be Fn pointing up and w pointing down. w=mg so (1.51kg)(-9.8) = -14.798N so Fn must be 14.798N ? Would part B basically be the same?
P: 66

## A car goes around a vertical circle (Uniform Circular Motion)

F_y = m*a_y
a_y = v^2/r

Does that help?
 P: 328 For part A it should be N - mg = 0, right ? Since mg is pointing down thus N has to be pointing up. For part B its not quite the same.

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