Can you deliver a crate safely? Change the slope, surface friction and mass, then release it. Explore how gravity and friction determine acceleration, travel time and speed.
WAREHOUSE TEST ZONE / Bay 04
Ready to release
Target: final speed below 3 m/s
Acceleration
—m/s²
Down the ramp
Speed at bottom
—m/s
Calculated prediction
Slide time
—s
Calculated prediction
Energy lost to friction
—J
Work done against friction
Speed over timePredicted path
a = g [sin(θ) − μk cos(θ)]
Mass cancels out of the acceleration equation: a heavier crate experiences more gravity and more friction. Only the ramp angle and friction coefficients affect acceleration in this idealised model.
Challenge resultNot started
Release the crate to test your setup. Score up to three stars by arriving slowly and staying in motion for over 1.5 seconds.
Starts if tan(θ) > μs · v = √(2aL) · t = √(2L/a)
An oil spill may occur 8–15 real seconds after release. If the crate has finished its trip, the spill changes the surface for the next attempt. Try a very gentle slope to observe it during a slide.
Educational model: rigid non-tipping crate; constant Coulomb friction per surface segment; zero starting speed; no air resistance. Results use g = 9.81 m/s². Extreme combinations with kinetic friction greater than static friction may be physically inconsistent; these are flagged rather than animated as negative acceleration from rest. Works offline; no external scripts or assets.