Springs

Today we used your labs to figure out Hooke's Law...which we actually learned and took notes on back in October. We also talked about ways the model of springs can be used to explain concepts that don't necessarily look like springs.

Dolphin Tails
Chemical Bonds
Robert Hooke

Homework: Chapter 13 (p.466) #1, 4, 5

Also bring your lab notebook Monday/Tuesday.

Spring Intro Lab

Today we derived Hooke's Law with a little intro lab:

Spring Intro Lab

The lab is due tomorrow.

Senior Debates

It's Senior Debates day! Periods 1-4, I will not see you at all. Go directly to the auditorium and stay there, please. Period 5 and 6 will have work time, though period 5 has to take a quick survey on their phones.

Building a Mobile

Today you had the whole period to complete the Mobile Project. Leftover time was work time - remember that the take-home test is due on Thursday.

Rotational Dynamics Test

Today we took the multiple choice section of the rotational dynamics unit test, and the leftover time was work time. The free response section is a take-home test and was available for pickup on the front desk. Remember that you can use your notes and textbook on the take-home test, but other people can't help you (and other people wrote content on the internet).

Work Day

Today you had time to work on your practice test. You will have a multiple choice quiz thing on Friday, then you will receive a take-home test for the free response section. The free response section will be due on the following Thursday (so you'll have it for 6 days).

Please continue to turn in your homework from this unit - remember that nothing from last week will be counted late since I was sick, but you do need to do that work eventually.

Here are the answers to the practice test:

Abridged answers

I also have some videos, but they are for an older version and some of the problems have changed.

#4
#5
#7 (PART C HAS CHANGED)
#8
#9 (energy method), #9 (dynamics method) (THIS HAS CHANGED)
#10
#11 (THIS HAS CHANGED)

Fun with Angular Momentum

Today we looked at a bunch of real-life consequences of angular momentum. We learned a "magic" trick involving a ring and a necklace, played with a gyroscope, and finally we watched a couple of videos that use angular momentum to explain real-world stuff:

Why cats land on their feet - Smarter Every Day
Aerial Skiing - The New York Times

Homework: Ch.8 (p. 271) #58 & 72

I also had your practice test ready today, so you may have picked one up. You will have a multiple choice quiz thing on Friday, then you will receive a take-home test for the free response section. The free response section will be due on the following Thursday (so you'll have it for 6 days).

Here are the answers to the practice test:

Abridged answers

I also have some videos, but they are for an older version and some of the problems have changed.

#4
#5
#7 (PART C HAS CHANGED)
#8
#9 (energy method), #9 (dynamics method) (THIS HAS CHANGED)
#10
#11 (THIS HAS CHANGED)