Question

What is the magnitude of the angular momentum of the 2.60kg , 6.00-cm-diameter rotating disk in the figure? And the direction?

Answer 1

do you have angular momentum formula

Answer 2

L=mvr

Answer 3

\[v=\omega r \]

Answer 4

where \[\omega\] = angular speed

Answer 5

you have mass, angular speed, and diameter so you can just plug and chug

Answer 6

\[
\text{Angular Momentum }L = I\omega \\
\text{Moment of Inertia for a disk: }I = \frac 12 mr^2 \\
L = \frac 12 mr^2 \omega \\
m = 2.6 \text{ Kg.} \\
r = 0.03 \text{ m.} \\
\omega = 600 \text{ rpm} = \frac{600*2\pi}{60} \text{ rad/sec}\\

\]

Answer 7

what would the direction be?

Answer 8

@aum

Answer 9

Use the right hand rule. Curl the fingers in the direction of rotation. In what direction will the thumb point?

Answer 10

x direction?

Answer 11

@aum

Answer 12

If the fingers of the right hand curl in the direction of the rotation, the thumb will point in the negative x-direction.