Rotational Energy and Momentum

how can torque do rotational work

torque angular displacement instead for forcedisplacement

how can rotational kinetic energy work

1/2 I omega^2

how to find angular momentum of a rigid body

L=I*W

how to find angular momentum of a point particle

p=mvr

what are the ways to find torque

t = I * a and t = change in angular momentum/time

how to find angular impulse

change in angular momentum or torque*delta time

what is rotational newton's 3rd law

angular impulse on one obj is equal to the angular impulse on another

define the center of mass when obj is rolling

angular velocity * R, R=radius of rigid body

what does an object that's rolling not have

static friction at the bottom, Wsf=0

what goes faster on an incline, an obj sliding without friction or a rolling obj

the one sliding without friction because it converts more energy to linear kinetic energy since it doesn't have to make torque (torque needs friction)

conservation of energy of a obj sliding without friction

mgh=1/2mv^2

conservation of energy of obj rolling

mgh=1/2mv^2+1/2Iw^2