Chapter 5 - Force and Motion II Friction –Static –Kinetic Incline/Horizontal Plane with friction Drag Forces –Terminal Velocity Uniform Circular Motion.

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Presentation transcript:

Chapter 5 - Force and Motion II Friction –Static –Kinetic Incline/Horizontal Plane with friction Drag Forces –Terminal Velocity Uniform Circular Motion –Banked and Flat Turns –Cresting Hills –Loop the Loops –Conical Pendulums –Ferris Wheels –Aircraft Turns

Friction

Coefficients of Friction

To push or pull a sled? Or

Measuring coefficients of friction

Two boxes and a pulley

Incline plane (no friction) m 2 = 7 kg Which way do blocks move? What is acceleration? What is tension in cord?

Incline plane (friction) What range of masses keep the blocks at rest? If m 2 = 10 kg, determine the system acceleration

Uniform Circular Motion

Banked Roads No friction required:

Conical Pendulum

Motion in a vertical circle with gravity m =.150 kg r = 1.10 m Find minimum speed to continue moving in a circle If speed is twice this minimum, find tension in cord at top and bottom.

Demo

Non-uniform circular motion

Velocity Dependent Forces Terminal Velocity