Loading in 5 sec....

Forces, Forces EverywherePowerPoint Presentation

Forces, Forces Everywhere

- 160 Views
- Uploaded on
- Presentation posted in: General

Forces, Forces Everywhere

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Forces, Forces Everywhere

An investigation of frictional forces around us

- Newton’s 2nd law: F=m*a
- Weight is an example of Force
- Gravity is an example of Acceleration

- Forces can be described by the direction in which the acceleration acts
- Forces acting on surfaces
- Normal Force

- Friction
- Proportional to the normal force
- Exists for motionless and moving objects.
- Ff=μN

- Drag
- Proportional to velocity of fluid or object
- Fd=(½)ρv2CdA
- Density, velocity, drag coefficient, area

- We will experiment with friction by examining the force needed to move two surfaces past each other, and analyze the force-position data to calculate frictional coefficient(s).

**Think about these questions**

Will the roughness of the wheels and sliding surface (floor) have an effect on the force required to move the car?

How are we comparing surface roughness?