Catapult Experiment

Set factors

A: Release angle (°) How far the arm is pulled back

B: Firing angle (°) Where the stop halts the arm

C: Cup elevation (cm) Cup distance from the pivot

D: Pin elevation (cm) Band pin distance on the arm

E: Bungee position (cm) Band hook height on the tower

Experiment mode

Deterministic Stochastic

Same factors always produce the same result.

Fixed constants used in the model

Arm 45 cm / 60 g; cup 10 g; ping-pong ball 2.7 g.
Rubber band spring k = 95 N/m, rest length 10 cm.
Band energy between A and B minus lift work, × 80% → arm speed.
Ball flight: gravity + air drag, RK4.

Altitude (m) Distance (m)

#	A	B	C	D	E	Dist.(m)	Flight time(s)	Max height(m)	Launch speed(m/s)	Mode
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Analysis charts

Main Effects / Interaction Plot

See how each factor affects landing distance across your logged runs.

Release angle (A)

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Simulate

Main Effects / Interaction Plot

Release angle (A)