Torque and Angular Momentum

Rotational Kinematic Energy

=1/2Iw^2

Rotational Inertia

kg*m^2

pg 258 equations

Torque

=rFsin

Lever Arms

the distance r

moment arm

Center of Gravity

Work done by Torque

torque times the angular displacement

Equilibrium

Human Body

different examples

Conditions

Sum of F=0

Sum of torques=o

PRoblem-Solving

Newton's Second Law

the sum of torques=Interia*angular acceration

Motion of Rolling Objects

some equations on pg 281

Angular Momentum

L=Interia*angular velocity

Comservation of angular momentum

initial L=final L

right hand rule