Newton's Second Law Topic

Demonstrates that constant-force springs provide uniform tension regardless of extension, contrasting with Hooke's Law springs where force is proportional to displacement. Attaching a mass to the cable produces neutral equilibrium …

Demonstrates Newton's Second Law quantitatively using two masses connected over a pulley. A small mass imbalance produces measurable constant acceleration, allowing students to compare predicted and measured fall times.

A cup with a hole leaks water when held stationary but stops leaking when dropped. In the cup's freely falling reference frame, the effective gravity is zero, eliminating the hydrostatic …

When a suspended slinky is released, its bottom remains completely stationary until the collapsing top reaches it. This challenges the assumption that all parts of a falling object accelerate simultaneously …

An inverted water-filled flask with a fishing float rides on a spring-mounted cart. When accelerated, the heavier water pushes opposite to the acceleration while the buoyant float moves toward the …