Spring & mass
The effect of mass
Isolate inertia by comparing two undamped oscillators.
Start experimentPREDICT · OBSERVE · UNDERSTAND
Turn a question into an experiment.
Guided investigations with a clear starting point, one deliberate change and a physical explanation.
Spring & mass
A stiffer restoring force
Connect stiffness to oscillation rate and initial acceleration.
Start experimentSpring & mass
Where does the ringing go?
Change damping while keeping the step force and equilibrium unchanged.
Start experimentSpring & mass
Find the critical boundary
Find the transition between oscillatory and overdamped poles.
Start experimentCart & pendulum
A small lean is enough
Demonstrate that upright equilibrium is physically unstable.
Start experimentCart & pendulum
Tune the angular rate gain
Compare angle recovery, force and cart motion when changing derivative gain.
Start experimentCart & pendulum
Linear or nonlinear?
Compare a near-upright approximation with the full nonlinear equations.
Start experimentVehicle suspension
Comfort versus stiffness
Study body acceleration and suspension travel for the same smooth road bump.
Start experimentVehicle suspension
Tune a suspension damper
Compare transient vibration and transmitted acceleration on a fixed road.
Start experimentElectric drive
Voltage becomes speed
Explore the linear speed gain of an ideal DC motor.
Start experimentElectric drive
Inertia and acceleration
Separate the effect of inertia on the transient from the speed equilibrium.
Start experiment