PHYS 1200 Lecture Notes - Lecture 10: Generic Point, Moment Of Inertia, Rigid Body
18 Aug 2016
School
Department
Course
Professor
Document Summary
We consider the rotation of rigid bodies. A rigid body is an extended object (as opposed to a point object) in which the mass is distributed spatially. The same force applied at different locations produces different results (the axel vs. the ends: class demonstration: the rotating axel when professor merlino pushed on the axis, it wasn"t very useful to swning the rod. Torque: the combination of force and point of application is called torque. The lever arm l is the distance from the axis of rotation to the point where the force is applied. If the line of action of f passes through the axis of rotation, it produces no torque. Torque wrenches were invented, so that bolts do not break. Since both forces are applied in opposite directions, it will not accelerate. However, the forces will make the rod rotate clockwise. In order for and object not to accelerate or rotate:
