C5 : Friction , Circular Motion & Drag Forces

5.1 : Application of Newton's Laws Involving Friction

5.3 : Dynamics of Uniform Circular Motion

5.4 : Highway Curves :
Banked & Unbanked

5.6 : Velocity-Dependent Forces : Drag & Terminal Velocity

5.2 : Uniform Circular Motion, Kinematics

5.5 : Nonuniform Circular Motion

Friction is always present when two solid surfaces slide along each other
- sliding friction is called kinetic friction
- static friction applies when two surfaces are at rest

images

6EXpa

eqn2

lecture-ch-05-11-728

images (1)

The net force towards the center of circle

If the road flat ,force is supplied by friction

If the tires not slip : the friction is static
If the tires start to slip : the friction is kinetic

slide_4

atan : dv/dt

falls with constant
velocity called terminal velocity

unnamed

ROHANIE BINTI ISHAK

A20SC0346