Which situation has the least magnitude of angular momentum about ...

[fahad]

Which situation has the least magnitude of angular momentum about the origin?
 
   A. A 2 kg mass travels along the line y = 3 m with speed 1.5 m/s.
   B. A 1 kg mass travels in a circle of r = 4.5 m about the origin with speed 2 m/s.
   C. A disk with I = 3 kgm2 rotates about its center (on origin) with  = 3 rad/s.

  1.A
  2.B
  3.C
  4.Both A and B
  5.Both A and C
  6.Both B and C
  7.All have the same magnitude angular momentum

Question 2

A uniform disk with mass M and radius R sits at rest on an incline 30 to the horizontal. A string is wound around disk and attached to top of incline as shown. The string is parallel to incline. The friction force acting at the contact point is:
 
  1.Mg/2, down the incline
  2.Mg/2, up the incline
  3.Mg/4, up the incline
  4.Mg/0.86, down the incline
  5.None of the above
  6.Cannot be determined

[nikmaaacs]

Answer to Question 1

7

Answer to Question 2

3

[fahad]

TY

[nikmaaacs]

You're welcome