1 / 13

Rotational Motion of an Object - PowerPoint PPT Presentation

Rotational Motion of an Object. Physics Matters: Chapter 7. Rotational Motion. All Spinning Objects Axis of Rotation The line about which everything rotates. Speed of Rotation Period of rotation The time of a single complete rotation ( T) Frequency of rotation

Related searches for Rotational Motion of an Object

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

PowerPoint Slideshow about 'Rotational Motion of an Object' - phila

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 - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Rotational Motion of an Object

Physics Matters: Chapter 7

• All Spinning Objects

• Axis of Rotation

• The line about which everything rotates.

• Speed of Rotation

• Period of rotation

• The time of a single complete rotation (T)

• Frequency of rotation

• The number of cycles completed in a given time (f = hertz)

• Period = 1/Frequency or Frequency = 1/Period

• T= 1/f f=1/T

• Angular speed

•  = s/r ( is measured in radians)

• For 360 degreed, s = 2r

• Angular speed = 2f

• Tangential force being applied times the perpendicular distance from the axis of rotation

•  = Ftr

• Moment of inertia

• In general, the farther away a mass is from the axis the greater its moment of inertia is.

• I = kmr2

• Momentum of inertia times angular speed

• L = I 

• Conservation of Angular momentum

• Direction of Rotation

• The right hand rule

Center of GravityCenter of Mass

"All of science is nothing more than the refinement of everyday thinking."-- Albert Einstein

• Point of an object located at the average position of weight.

• The Average position of matter

• Toppling occurs when the center of gravity extends beyond the support base.

• Unstable – CG is lowered with displacement

• Stable – work must be done to raise the CG

• Neutral – displacement neither raises or lowers the CG

Objects rotate around their center of gravity.

Let’s try some activities!!