Massdriver
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Description:	Simulates the propulsion of an object using magnetic coils fired in sequence.
To try this simulation:	Left-drag right to increase the mass-driver's power. When the power approaches maximum, the coils' electromagnetic field is strong enough to overcome the metal sphere's inertia and fire it through the tunnel. The launch power depends on how fast the user drags. After a moment, the device will be reset. Right-drag to rotate the assembly.
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