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 2A 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
The Mass of Impacts on Earth
Several scenarios for what led to the origin of habitual bipedalism.
Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap
Chemical equilibrium and the law of mass action.
The transition from college to first job can be a triggering situation for new growth in meaning ...
In the box on upward social mobility on page 82, we discussed how Latinos face a similar situation. ...