Exercise 2
Turn in both parts at the same time, clearly labeled
Remember the requirements for problems of this type.
Do not just give yes or no as an answer to a question - provide rationale. If calculations are required, then show the calculations. If these requirements are not followed, then the problem will be graded as incorrect.
Chapter 7: Linear Momentum
1.
When is the linear momentum of
a system conserved?
2.
When is the kinetic energy of a system conserved?
3.
When is total energy of a system conserved?
4.
When is mechanical energy of a system conserved?
Chapter
8: Rotational Motion
5. When
is total angular momentum of a system conserved?
6.
Rotating rods - equal weight - demonstration. Clearly explain why it was
more difficult to rotate one rod than the other.
7.
Rotating mass on a string demonstration. Why did the angular velocity
increase as I pulled on the string?
8. Why do
animals that can run very fast have most of the mass of their legs closer to
their body?
9. Is it possible for a non-rigid body to have a single
value of the angular velocity?
10. Can a small force ever exert a greater torque than a
larger force?
| Page | Concept | Problem |
| 219 | Angular Quantities | 4 |
| 219 | Constant Acceleration: Rolling | 15 |
| 220 | Torque | 22 |
| 220 | Rotational Dynamics | 27 |
| 221 | Rotational Kinetic Energy | 43 |
| 222 | Angular Momentum | 51 |