Today we started with a Practice Worksheet that had a series of questions about a Block on Table.
Several people asked me about the answer to problem 8 on the Friction Worksheet. I tried the problem and got a different answer. Here is my solution:
Your test on Dynamics will be tomorrow. It may be useful to try the Practice Test in the SNAP book on pages 128-130. Here are the answers:
Here is another practice sheet of Government Exam Questions. These are similar to the kind of questions you could get on the test.
We now start Work and Energy
We reviewed the Work and Energy Concepts introduced in Physics 11. I don’t want to spend too much time on this. Here are the questions you may want to look at from the SNAP book.
SNAP questions page 135-138
SNAP questions page 141-142
SNAP pages 146-147; 150
Next we looked at the Work Energy Theorem
I assigned pages 153=155 in the SNAP book. Here are the answers:
Next we looked at Conservation of Mechanical Energy
I assigned pages 158-160 of the SNAP book. Here are the answers:
NOTE: All the videos for Work and Energy can be found in the Menu item: Video Clips for Physics 12.