Question

Conceptual physics problems.

Right now I would really love help with questions 1 and 2.

Please wait while I post the attachment.

Answer 1

Originally, I felt the correct answer for 1 was A, but then I notice that both objects are positioned differently, so I'm not so sure now.

Answer 2

moment of inertia = integral(r^2 dm). the distance from the axis r of each mass particle dm in 1 is greater than in 2.

Answer 3

So does this mean the correct answer is A?

Answer 4

yup :)

Answer 5

I thought so.

How about 2?

From what I know about inertia, I feel the answer is B.

However, my professor covered ANGULAR momentum very briefly, so I'm not sure.

Answer 6

i think it's B, since there's no external torque on the system.

Answer 7

not sure though