Topic · 3 games
Every object acts as if its whole weight pulled at one point, the centre of mass: x_cm = Σm·x ÷ Σm. Support it there and it balances; let it pass the edge of its support and it tips.
PLAY NOW · 40
Balance a loaded beam on a narrow support. Weight each position by its mass to find the centre of mass, include the beam's own weight, and place or choose a mass to move the balance point.
PLAY NOW · 41
Build a mobile that hangs level. Find the balance point of each rod, work from the bottom up, and treat a whole lower mobile as a single mass hanging at the end of a rod.
PLAY NOW · 42
Stack blocks out past a table's edge without toppling. Keep the centre of mass of every part of the stack over the block below it, add a counterweight, and find out how far a stack can lean.
11 games
Position, velocity, acceleration, and gravity.
2 games
Units, SI prefixes, and scientific notation.
3 games
Rearranging formulas: inverse operations and unit checks.
3 games
Vector addition, displacement, and forces.
3 games
Right triangles, inverse functions, and the unit circle.
3 games
Horizontal and angled launches: two motions at once.
3 games
Uniform circular motion, angular velocity, and centripetal force.
3 games
Newton's law of universal gravitation, weight, orbits, and Kepler's laws.
3 games
Force equilibrium, cable tension, torque, and support reactions.
5 games
Torque, lever arms, tipping, and angular acceleration.
9 games
Density, buoyancy, floating, and pressure under water and in the air.
3 games
Flow, Bernoulli's principle, jets, pipes, and lift.
10 games
Amplitude, period, frequency, pendulums, springs, energy, and resonance.
27 games
What a wave is, amplitude, wavelength, frequency, period, and sound.
10 games
Electric charge, electrons, and the forces between charges.
16 games
Voltage, current, resistance, and the energy circuits carry.