We have enabled User registrations.
0 votes
by

For which diagrams is the angular momentum constant?

Each of the disks in (Figure 3) has radius r. Each disk can rotate freely about the axis passing through the center of the disk perpendicular to the plane of the figure, as shown. For which diagrams is the angular momentum constant? In your calculations, use the information provided in the diagrams.

Type the letters corresponding to the correct diagrams. For instance, if you think that only diagrams A, B, and C answer the question, type ABC.

Here is the diagram

image

The answer is supposedly AD but I don't understand how.

How do A and D have constant angular momentum?

1 Answer

0 votes
by
selected by
 
Best answer

The Best Answer For which diagrams is the angular momentum constant?

On A: net τ = (4+8-12)N * R = 0

on B: net τ = (8+4+4/2)N * R ╪ 0

on C: net τ = (8+12/2-4)N * R ╪ 0

on D: net τ = (36/2-4-6-8)N * R = 0

Hence, only A and D have constant angular momentum (and constant angular velocity).

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat.
SHOW ANSWER
...