F = ma

PDF организаторовВсе заданияВсе решения

1Angular velocity ratio of a car's front wheels in a turn *

2Cylinder floating fraction after adding oil *

3Retarding force of snow catching a falling book *

4Acceleration of a bead sliding down a helix *

5Possible path of a particle in an accelerating box *

6Returning path of a particle in an accelerating box *

7Period of a mass on a symmetric stretched spring *

8Kepler's laws under a modified force law *

9Speed of a bead leaving a frictionless sphere *

10Accelerations after cutting the upper string *

11Scaling of maximum speed with a car's mass *

12Floating block in an upward-accelerating container *

13Bounding the speed ratio of the struck object *

14New frequency after moving a spring's attachment point *

15New frequency after moving a spring's fixed post *

16Landing distance of a ball rolled off a truck *

17Critical velocity for a spinning ball to stop *

18Total time for a spin-up, coast, spin-down motion *

19Graph relating a bead's launch height and landing distance *

20Friction needed for a prism to topple, not slide *

21Horizontal displacement of a falling rod-mass system *

22Speed of a falling rod-mass system before impact *

23New radius of a spinning elastic ring *

24Moment of inertia of a hexagon from a triangle *

25Comparing measurement uncertainties for a rod's length *

USAPhO

PDF организаторовВсе заданияВсе решения

1Problem A1

2Problem A2

3Problem A3

4Problem A4

5Problem B1

6Problem B2