1 / 2

Ch. 12 – Rotational Motion

Ch. 12 – Rotational Motion. I. Torque:. Measurement of a force perpendicular to a lever arm. A. T = F perp d (SI Units = Nm). B. Balanced Teeter-Totters:. To balance, torques must be equal!. 1. F perp d = F perp d. 2. If one side has a larger Force (weight) than the other,.

palmer-graves
Download Presentation

Ch. 12 – Rotational Motion

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ch. 12 – Rotational Motion I. Torque: Measurement of a force perpendicular to a lever arm A. T = Fperpd (SI Units = Nm) B. Balanced Teeter-Totters: To balance, torques must be equal! 1. Fperpd = Fperpd 2. If one side has a larger Force (weight) than the other, the distance (length of lever) must change inversely C. Unbalanced Teeter-Totters: The CG is always on the side with the most torque

  2. The resistance of objects to changes in their rotational motion. II. Rotational Inertia (I): A. Equation: I = mr2 1. SI units = kgm2 2. The greater the distance the mass is from the CG, the greater the rotational inertia (balancing a broom) B. Rolling: Involves linear motion and rotational motion *** a barrel of water vs. a barrel of ice *** C. Angular Momentum: Like regular momentum, but is the product of rotational inertia and rotational velocity *** Angular momentum = I W *** D. Conservation of Angular Momentum: Decreasing inertia of a system increases the velocity, and vice versa (ice skaters, etc.) *** IWbefore = IWafter ***

More Related