PHYS 2- Midterm Exam Guide - Comprehensive Notes for the exam ( 51 pages long!)
Document Summary
Must go to the right so it can accelerate to the right. In both cases, you get a clockwise torque about the point of contact due to the force of the pulls. Remember: is the full distance from origin to where the force is applied. A particle can have angular momentum even if it isn"t moving in a circular motion. Example: is the component of that is perpendicular to. Since is constant, we say that it is conserved. Find the direction of angular momentum vectors for relative to origin. For non-rigid body, find the sum of all the angular momentums of all the particles. Angular momentum for rigid body rotating around a symmetry axis: If net force is zero, momentum remains constant in magnitude and direction. If net torque is zero, angular momentum remains constant in magnitude and direction. Planets orbit the sun in elliptical orbits (distance from sun to planet changes).
