Topic · 10 games
A pendulum or a mass on a spring swings back and forth with its own steady rhythm, whatever the size of the swing. Energy flows between motion and storage, and pushes in time with the rhythm build a big motion: T = 2π·√(L ÷ g), T = 2π·√(m ÷ k), E = ½·k·A².
PLAY NOW · 55
The period is the time for one beat; the frequency is how many beats fit in a second. Turn tempos into periods and hertz into beats per minute, count beats, and find when two metronomes click together.
PLAY NOW · 56
Amplitude is how far an oscillation swings from the middle, not from top to bottom. Read it off a harbour post, see the period stay the same on a bigger swell, and find distances, speeds, and energies.
PLAY NOW · 57
A seismograph turns shaking into a wavy line. Read the period from the peak spacing and the paper speed, the frequency from the period, and the ground's tiny amplitude from the magnified trace.
PLAY NOW · 58
A pendulum's period depends only on its length and on g: T = 2π·√(L ÷ g). Build a seconds pendulum, time a short one, double a period, swing one on the Moon, and try a heavier bob.
PLAY NOW · 59
A swinging ball trades height for speed and back: v = √(2·g·h). Find speeds at the bottom and partway down, the rope's pull, Galileo's peg, and the angle a given speed reaches.
PLAY NOW · 60
T = 2π·√(L ÷ g) is only exact for tiny swings, and real swings fade. Find a big swing's period, a clock's error, how a swing shrinks, its half-life, and the energy it loses.
PLAY NOW · 61
A spring pulls back with k·x, and a mass on it bounces with T = 2π·√(m ÷ k). Find a stretch, a period, a spring, a top speed, and a period from the stretch alone.
PLAY NOW · 62
Springs side by side share the load and act stiffer; end to end, each carries it all and they act softer. Predict stretches, the stiffness of half a spring and of a mixed pair, and a bounce.
PLAY NOW · 63
A squashed spring stores ½·k·x² and hands it on when let go. Launch a pinball and a rocket, aim for a platform, see what doubling the push does, and stop a cart with a spring.
PLAY NOW · 64
An oscillator trades motion for stored energy and back, and small pushes in time with it build a big swing. Time a swing's pushes, find speeds and energies, and the bumps that make a car resonate.
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.
3 games
Centre of mass, balance points, composite objects, and toppling.
9 games
Density, buoyancy, floating, and pressure under water and in the air.
3 games
Flow, Bernoulli's principle, jets, pipes, and lift.
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.