Question 1
A uniform rod of mass M and length L hangs from a frictionless pivot at one end. It is held horizontal and released from rest. What is its angular speed as it swings through the vertical?
AP Physics C free-response questions: the four types
On each exam: four questions, one of each type, worth 40 points and half the score.
| Questions | 4, one of each type |
|---|---|
| Points | 10, 12, 10 and 8 (40 in all) |
| Time | 95 minutes for all four |
| Weight | 50% of each exam's score |
What each type asks
- Mathematical Routines, 10 points: diagram, derive, calculate.
- Translation Between Representations, 12 points: a diagram, equation and graph that agree.
- Experimental Design and Analysis, 10 points: plan, linearize, use the slope.
- Qualitative/Quantitative Translation, 8 points: argue in words, then derive.
Earning each point
- Start from a fundamental relation, then integrate or differentiate.
- Write the limits on every integral.
- Answer every part; later parts still score after a slip.
Try 2 questions
Question 2
A 0.50 m metal bar moves at a constant 4.0 m/s along frictionless rails joined by a 2.0 Ω resistor, as shown. A uniform 0.30 T magnetic field points into the page. What force must be applied to the bar to keep it moving at constant speed?
FAQ
Are AP Physics C free-response answers typed?
No, you handwrite them in a paper booklet.