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Newton's Laws : Friction, Circular Motion, Drag Forces, Low Jing Ning…
Newton's Laws : Friction, Circular Motion, Drag Forces
Uniform Circular Motion-Kinematics
Instantaneous velocity always tangent to the circle
acceleration is centripetal(points towards centre of circle)
Dynamics of Uniform Circular Motion
An object has a net force when it is in a uniform circular motion
Highway Curves
Banked
Unbanked
Velocity-Dependent Forces : Drag and Terminal Velocity
When a falling object's drag force proportional to velocity, then the drag force and gravitational force are equal. This is called terminal velocity
Nonuniform Circular Motion
object moves in a circular path, but varying speeds
have a tangent component to the acceleration
Applications of Newton's Laws Involving Friction
present when two surface slide along each other
Static Friction
need to prevent slipping
apply when two surfaces at rest
Start to slip when applied force bigger than static frictionak force
Kinetic Friction
usually smaller than static friction
Low Jing Ning A20SC0126
