Please try to complete all these assignments this week. I will be adding Rotational Energy assignments on Wednesday.
Last updated 3/23 at 11:50. More updates will come later this afternoon. I’ll be on Zoom from Noon until 1:00 if you have questions: Meeting ID: 569-283-4396
Contents of this post
Resources
Textbook sections
- Read/review the following sections
- 8.2 Torque and the two conditions for equilibrium
- 8.3 The center of gravity
- 8.4 Examples of objects in equilibrium
- 8.5 Relationship between torque and angular acceleration
- If you finish these, our next sections will be 8.6, Rotational energy and 8.7, Rotational momentum
Hopefully you can see how this parallels how we addressed linear motion
- Forces, balanced vs unbalanced
- Energy
- Momentum
Videos
Flipping Physics
Note: Opening the videos below on the YouTube page will provide you with more resources.
Remember: Try writing the problem and solving it as the video proceeds through these steps.
Right hand rule for determining positive or negative torque
We will usually discuss torque as being clockwise or counterclockwise, but in some cases we want to address torque as positive or negative. The “right hand rule” helps you to determine if the torque is positive or negative.
Introductory Rotational Equilibrium Problem
Practice problems
Textbook
- Section 8.2-8.4
- Straightforward: # 9, 11, 19
- Intermediate: # 13, 15, 17, 21, 25
- Challenging: None in these sections.
- Section 8.5
- Straightforward: #29,
- Intermediate: # 31, 33, 35, 36
- Challenging: None in this section
I’m trying to get free access for students to the “Physics Now” coached problems on the publishers website: www.cp7e.com. I’ll post login information here if I get it.
I’ll post answers to the even numbered questions here by Wednesday, and remember the odd numbered answers can be found her if you can’t find them in your textbook.
TheExpertTA
An assignment has been added to TheExpertTA. The title is 3/20: Torque and Angular Acceleration.