Feel the Invisible Push — Electromagnetic Swing Kit

Explore the fascinating connection between electricity, magnetism, and motion with the Electromagnetic Swing Kit! This hands-on STEM project demonstrates how an electric current interacting with a magnetic field can produce force and create movement.

As students build and experiment with the working swing, they'll discover that creating motion is only part of the challenge. To keep the swing moving efficiently, electromagnetic pulses must occur at the right time—introducing students to the fascinating concepts of oscillation, frequency, and resonance.

It's an engaging way to take students beyond basic magnetism and explore how invisible electromagnetic forces can produce and sustain physical motion.

What's in the Kit & How It Works

The Electromagnetic Swing Kit demonstrates how electric current and magnetic fields interact to create mechanical force.

When electrical current flows through a conductive coil positioned within a magnetic field, the coil experiences a force that causes it to move. This electromagnetic force provides the initial push needed to set the swing in motion.

Once moving, gravity and inertia cause the swing to oscillate back and forth. To maintain or increase this motion, additional electromagnetic pushes must be delivered at just the right time.

This introduces the important concept of resonance. When the timing of the electromagnetic force closely matches the swing's natural frequency, energy is transferred efficiently and the swing can maintain or increase its amplitude. Poorly timed forces transfer less useful energy and can interfere with the motion.

Students can observe the process from electrical current → magnetic interaction → electromagnetic force → movement → oscillation → synchronized energy input → sustained motion.

STEM Concepts in Action

Why Teachers Will Love It

• Demonstrates the connection between electricity, magnetism, and mechanical motion
• Makes invisible electromagnetic forces observable through physical movement
• Introduces students to oscillation, frequency, amplitude, and resonance
• Provides an engaging transition from basic magnetism to more advanced physics concepts
• Demonstrates how the timing of an applied force affects energy transfer
• Connects concepts from electricity, magnetism, forces, motion, and energy in one project
• Encourages experimentation, measurement, observation, and troubleshooting
• Provides opportunities for students to investigate and optimize a dynamic system
• Ideal for STEM classrooms, physics courses, electricity and magnetism units, makerspaces, and enrichment activities

Classroom Activity Ideas

• Magnetic Force Investigation: Observe what happens when current flows through the coil within the magnetic field and identify the resulting movement.
• Timing Challenge: Experiment with the timing of electromagnetic pushes and observe how it affects the swing's motion.
• Resonance Investigation: Determine the swing's natural rhythm and explore why applying force at the correct frequency produces greater motion.
• Amplitude Experiment: Measure the height or angle of the swing over multiple cycles and compare different conditions.
• Frequency Measurement: Count the number of oscillations over a set period of time and calculate the swing's frequency.
• Energy Transformation: Trace the system's energy pathway from electrical energy to electromagnetic force and mechanical movement.
• Push a Swing Experiment: Compare the model to pushing a playground swing. Investigate why pushing at the right moment increases the swing's height while poorly timed pushes do not.
• Real-World Connections: Research how resonance and oscillation are important in clocks, musical instruments, bridges, buildings, electrical systems, and mechanical engineering.

From Electromagnetism to Resonance

The Electromagnetic Swing Kit transforms invisible electromagnetic forces into an engaging and highly visual STEM experience. Students don't simply learn that electricity and magnetism are connected—they can watch that interaction create physical movement.

The project then takes learning one step further by demonstrating that when energy is applied can be just as important as how much energy is applied. Through experimentation with oscillation and resonance, students discover why correctly timed forces can efficiently sustain or amplify motion.

By building and investigating their own electromagnetic swing, students gain practical experience with magnetic fields, electric current, electromagnetic force, gravity, inertia, oscillation, frequency, amplitude, resonance, and energy transfer.

Perfect for STEM classrooms and physics programs, the Electromagnetic Swing Kit provides an exciting bridge from fundamental electricity and magnetism to more advanced concepts in waves, oscillations, and resonance.