OSN Fisika Problems
The Indonesian national science olympiad, which has included physics since its first edition in Yogyakarta in 2002. Archived here is the district round, the first of four, sat as a written test.
All Mechanics Electromagnetism
Cards List
Kinematics Dynamics Rigid body Fluids Gravitation Statics Electrostatics Oscillations
2024
Indonesia
1 Spring in accelerating cart* not published 2 Pendulum on inclined cart* not published 3 Two balls with different launches* not published 4 Perpendicular velocities of two projectiles* not published 5 Vertical velocity in projectile* not published 6 Block at rest with applied force* not published 7 Slide, friction, and loop exit* not published 8 Maximum kinetic energy with friction* not published 9 Projectile range and height relation* not published 10 Car B catching car A* not published 11 Child on rotating table* not published 12 Jump landing force* not published 13 Work by constant force* not published 14 Half-circle path average speed* not published 15 Cylinder on inclined block* not published 16 Block pushed on smooth floor* not published 17 Cylinder with two springs* not published 18 Bouncing projectile between cliffs* not published 19 Stable equilibrium potential* not published 20 Cube corner masses potential* not published 21 Position when particle stops* not published 22 Maximum fall time after bounce* not published 23 Brick climbing inclined plane* not published 24 Power to maintain speed* not published 25 Cylinder-block acceleration* not published 26 Pilot weight in vertical loop* not published 27 Car on circular track* not published 28 Motorboat stopping distance* not published 29 Cyclist maximum speed* not published 30 Series springs stretch work* not published 31 Projectile in trapezoid building* not published 32 Three-cylinder rolling system* not published 33 Two blocks on pulled plank* not published 34 Rod on rolling cylinders on incline* not published 35 Minimum acceleration of pendulum* not published 36 Raindrop growth in mist* not published 37 Two blocks with spring released* not published 38 Elastic collision of equal balls* not published 39 Thin rod under opposing forces* not published 40 Moment of inertia of holed disk* not published
2023
Indonesia
1 Free fall initial velocity* not published 2 Typhoon Haiyan rotation rate* not published 3 Constant velocity force components* not published 4 Work by gravity on sliding block* not published 5 Block pushed on smooth floor* not published 6 Elastic energy of water depth* not published 7 Acceleration direction from position* not published 8 Turning point of motion* not published 9 Turning point of a moving object* not published 10 Diver impact speed* not published 11 Terminal velocity with air drag* not published 12 Billiard ball horizontal impulse* not published 13 String frequency scaling* not published 14 Two cars with constant acceleration* not published 15 Average speed with v = k√x* not published 16 Board sliding on mixed incline* not published 17 Equilibrium of four charges* not published 18 Minimum friction for leaning rod* not published 19 Pendulum acceleration direction* not published 20 Bouncing ball range* not published 21 Jump landing force* not published 22 Maximum speed with drag* not published 23 Satellite towed by rope* not published 24 Uniform motion time in acceleration-deceleration trip* not published 25 Car on circular path* not published 26 Maximum collisions of three particles* not published 27 Gravitational force at cube corner* not published 28 Maximum gravity inside uniform sphere* not published 29 Work by time-varying force* not published 30 Particle sliding on rotating rod* not published 31 Shrapnel hole in ceiling* not published 32 Pulley with rotating rod* not published 33 Cylinder pushed by moving wedge* not published 34 Three blocks with springs and friction* not published 35 Elastic collision of two rods* not published 36 Pendulum minimum total acceleration* not published 37 Leaking bucket pulled upward* not published 38 Vertical mass on elastic string* not published 39 Block with velocity-dependent friction* not published 40 Impulse on hinged rods* not published
2020
Indonesia
1 Object on rotating parabola* not published 2 Child's walk to school timing* not published 3 Two projectile trajectories to cliff* not published 4 Particle on conical mountain wire* not published 5 Two sliding blocks with elastic collision* not published 6 Sliding on a semicircular track* not published 7 Pendulum on moving bar; slingshot launch* not published
2019
Indonesia
1 Colliding pendulums with full rotation* not published 2 Cylinder rolling off table edge* not published 3 Four cars on a highway* not published 4 Two projectiles with perpendicular velocities* not published 5 Rotating platform on Earth* not published 6 Mass falling in oscillating room* not published 7 Collision-driven spring extension* not published 8 Rubber ring on a cone* not published
