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T* 4/20
W 4/21
Th 4/22
F 4/23
π΄ 1: T* 4/20, π‘ 3: T* 4/20a β©οΈ Pivot air resistance (1)
π΄ 1: T* 4/20, π‘ 3: T* 4/20a β©οΈ Pivot air resistance (1)
Today, we will study velocity dependent forces with a lab in β©οΈ Pivot Interactives called "Falling Coffee Filters." We'll get back into the swing of mechanics by doing a lab where we investigate the concepts of air resistance (drag) and terminal velocity. You'll analyzing videos you take and graphing position vs. time and velocity vs. time in Vernier. In the end, you'll see how drag force relates to velocity.
By the end of this lab, you will be able to:
Describe the force of air resistance.
Describe the motion of an object falling in the presence of air resistance.
Describe how air resistance varies with velocity.
Name some other variables that affect air resistance other than velocity.
Name some real-life situations where air resistance is beneficial or detrimental.
Homework: Lab due in β©οΈ Pivot on Sunday, April 25th at 10pm.
π₯ 1: W 4/21, π¨ 3: T* 4/20b β©οΈ Pivot air resistance (2)
π₯ 1: W 4/21, π¨ 3: T* 4/20b β©οΈ Pivot air resistance (2)
Today, we will continue to study velocity dependent forces with the β©οΈ Pivot Interactives lab called "Falling Coffee Filters." See previous post for description of the lab and Pivot for details.
Homework: Final E&M review webpage due Wednesday, April 21st at 10pm. Lab due in β©οΈ Pivot on Friday, April 23rd at 10pm. Watch the following video on velocity dependent forces. At time 6:00, pause the video and practice solving the differential equation on your own. (It will probably be faster than watching the whole video.) After you make your best attempt, fast forward to see if you were right. Then, at 17:00, listen to the notes at the end. Be prepared for a daily quiz next class.
β€οΈ 1: Th 4/22a, π 3: Th 4/22 velocity dependent forces problems (1)
β€οΈ 1: Th 4/22a, π 3: Th 4/22 velocity dependent forces problems (1)
Today, first finish the lab if you have not yet already. Then, you'll use what you've learned to try a few problems with velocity-dependent forces:
Required: 1982M2, 1990M1, 2000M2.
Homework: Submit velocity dependent forces AP problems to βοΈ Google Classroom by Monday, April 26th at 10pm.
π 1: Th 4/22b, π 3: F 4/23 velocity dependent forces problems (2)
π 1: Th 4/22b, π 3: F 4/23 velocity dependent forces problems (2)
Today, continue with problems with velocity-dependent forces:
Required: 1982M2, 1990M1, 2000M2.
Homework: Next class, we will be revisiting LR circuits. We will have an opportunity to demonstrate a better understanding of an LR circuit with a β GoFormative.
Watch the following two videos - they're the same problem with two different methods which are both useful:
Method 1: small mass dm, constant applied force, finite distance y
Method 2: whole mass remaining, changing applied force, force constant for very small distance dx
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