Chapter 8 quiz 2

Rotational Work, W_r

work done by a torque that causes an object to rotate through an angle

Rotational Work Equation

W_r = τθ

Rotational Work SI Unit

Joule

Rotational Kinetic Energy

kinetic energy due to the rotation of an object; part of its total kinetic energy

Rotational Kinetic Energy Equation

K_r = ½ I ω²

Rotational Kinetic Energy SI Unit

Joule

Rotational Power

power delivered to a system that is rotating about a fixed axis

Rotational Power Equation

P = τω

Rotational Power SI Unit

Watt

Angular Momentum, L

angular resistance to change

Angular Momentum Equation

L = Iω

Angular Momentum SI Unit

kgm²/s

Conservation of Angular Momentum

L_o = L