Rotational Motion

Question 1

Radians

Answer 1

Theta=l/r

Question 2

2 pi radians equals

Answer 2

360 degrees

Question 3

Angular position

Answer 3

Theta (radians)

Question 4

Angular velocity

Answer 4

Omega (rad/s)

Question 5

Angular acceleration

Answer 5

Alpha (rad/sec^2)

Question 6

Tangential Velocity

Answer 6

v=r *omega

Question 7

Tangential Acceleration

Answer 7

a=r*alpha

Question 8

Radial acceleration vs Tangential acceleration

Answer 8

Radial goes in a circle
Tangential speeds up a spot, affects angular velocity

Question 9

Angular velocity equals

Answer 9

2pif

Question 10

Radial Acceleration

Answer 10

a=【(v)^2】/r = r*(omega)^2

Question 11

Net Torque

Answer 11

T net=I*alpha

Question 12

Moment of Inertia

Answer 12

I=(sum) mr^2

Question 13

Torque

Answer 13

T=RF(perpendicular)
T=R(perpendicular) F

Question 14

Rotational Kinetic Energy

Answer 14

K=1/2(I)(omega) ^2

Question 15

Velocity while rolling without slipping

Answer 15

Vcm=R(omega)

Question 16

Kinetic Energy for a rolling object

Answer 16

K=1/2mv^2cm+1/2Icm(omega)^2

Question 17

Angular Momentum

Answer 17

L=I(omega)

Question 18

Angular Momentum in terms of 2nd law

Answer 18

T external = change in L / change in t

Question 19

Arms in while spinning

Answer 19

I after < I before
Omega after > Omega before