PHYS 104 1st Edition Lecture 8Outline of Last Lecture I. Practice Problems on Stress and StrainOutline of Current Lecture II. Point Masses III. Extended BodiesIV. Static EquilibriumV. Force and RotationVI. TorqueVII. Center of MassCurrent Lecture- Point Masseso Object of interesto Sum the forces in order to determine accelerationo|Fnet ,G|=|NSG|−|WSG|=mGaG- Extended Bodieso Objects that cannot be described as point masseso Ex. Wheel of Fortune: It has two forces applied.- Static Equilibriumo State at which an object is at resto Zero net force- Force and Rotationo Factors that must be considered Magnitude Position Angle- Torqueoτ =r ×F|τ|=|r||F|sin θo Units: N*mo Only the tangential component of the force contributes to torqueo Forces directly toward or away from the axis of rotation does not cause torqueo Moment ArmThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Perpendicular to the force vectoro Directions Counterclockwise = positive Clockwise = negative- Center of Masso Which placement will provide balance?o Example: Teeter-tottero For homogenous objects, this is at the geometric centero The center of mass does not necessarily have to be in/on the object Example:
View Full Document
Unlocking...