1st Law (Inertia) • 2nd Law (F = ma) • 3rd Law (Action & Reaction) — Simulate • Explore • Practice • Quiz
Newton’s Laws of Motion form the foundation of classical mechanics and describe how objects move in response to forces. Published by Sir Isaac Newton in 1687, these three laws govern everything from everyday movement to spacecraft trajectories. This interactive simulator helps you visualise each law by adjusting force, mass, and friction in real time.
Newton’s First Law (Inertia) states that an object at rest stays at rest, and an object in motion stays in motion at constant velocity, unless acted upon by a net external force. This property of matter is called inertia, and mass is its measure. In the simulator, toggle friction on and off to see how a sliding object behaves differently on ice versus a rough surface.
Newton’s Second Law (F = ma) quantifies the relationship between force, mass, and acceleration. The net force equals mass times acceleration: Fnet = ma. Doubling the force doubles the acceleration; doubling the mass halves it. Use the simulator’s force and mass sliders to see real-time free body diagrams with all forces drawn to scale.
Newton’s Third Law (Action-Reaction) says that for every action, there is an equal and opposite reaction. When object A pushes on object B, B pushes back on A with equal force. The simulator shows two blocks with different masses experiencing the same force but different accelerations — proving that Faction = Freaction while a ≠ a.
In Simulate mode, select which law to explore using the law tabs. Each law has its own controls: set initial velocity and surface type for the 1st Law, adjust applied force, mass, and friction for the 2nd Law, or set push force and masses for the 3rd Law. Readout cards display all calculated values in real time. Switch to Explore mode to study 12 concepts across all three laws with diagrams and worked examples. Practice mode generates random F = ma problems, and Quiz tests your knowledge with 5 randomised questions.
This simulator is designed for physics and mechanical engineering students, technical education trainees, and instructors teaching Newtonian mechanics. It provides visual, hands-on understanding of force, mass, acceleration, friction, inertia, and action-reaction pairs without requiring laboratory equipment.