F = ma

PDF организаторовВсе заданияВсе решения

1Friction needed for a motorcycle on a vertical wall *

2Spring oscillation frequency during free fall *

3Shell displacement after a ball settles inside it *

4Evolving pattern of accelerating cars in traffic *

5Optimal launch angle off a cliff for maximum range *

6Balancing a four-mass mobile *

7Kinetic energy growth of a snow-collecting train *

8Minimum engine power for a snow-collecting train *

9Ranking base forces from water in different flasks *

10Gauge pressure at the bottom of a milk jug *

11Impact point for a struck rod not to rotate *

12Impact mass for a struck rod not to rotate *

13Pulley tension as one mass grows without bound *

14Which rolling shape accelerates fastest downhill *

15Comparing rolling sphere speeds after a fixed drop *

16Speed of a rod's end against a slanted wall *

17Initial speed of an object falling the last 60 meters *

18Point of zero acceleration on a rolling disk *

19Friction coefficient from a puck's speed-time graph *

20Maximizing momentum transfer in an inelastic collision *

21Maximum momentum transfer in an elastic collision *

22Maximizing energy transfer in an elastic collision *

23Wave pulse travel time on a stretched spring *

24Maximum spring compression in a free-space collision *

25Orbital speed at perigee versus a nearby point *

USAPhO

PDF организаторовВсе заданияВсе решения

1Problem A1

2Problem A2

3Problem A3

4Problem A4

5Problem B1

6Problem B2