Smithsonian Perpetual Motion Machine

• Grades: 3–8
• Number of Students: 1–2 students per kit; pairs are recommended
• Number of Lessons: N/A — no fixed lesson count specified
• Hours of Content: Approximately 1–2 hours, estimated for setup, observation, and discussion

Highlights:

Bring physics to life with the Smithsonian Perpetual Motion Machine, an engaging kinetic science model that visually demonstrates key physics principles, including energy conservation, inertia, and momentum transfer. Once set in motion, the weighted spheres swing and collide, keeping movement circulating in a steady, hypnotic rhythm—illustrating the balance between potential and kinetic energy.

Perfect for classrooms, homeschool STEM labs or as a desktop thinking piece, this perpetual motion machine encourages scientific exploration and sparks curiosity about how motion is sustained and energy moves through systems. Kids can experiment by adjusting the starting force, observing decay, testing timing, and exploring how different variables affect movement stability.

Beyond scientific use, the machine makes a stunning display piece for offices, bedrooms, or study spaces—providing a calming and inspirational visual centerpiece. Smithsonian branding adds authenticity and educational value, making it an ideal gift for young scientists, engineers, teachers, and collectors of mechanical curiosities.

What’s Included:

• 1x Perpetual Motion Machine
• Color Poster with Instructions
  

Technology Requirements/Specifications:

• Dimensions: 29.8 x 5.1 x 26.7 cm (11.8 x 2 x 10.5 in)
• Weight: 376.48 g (13.28 oz)

Special Notes and Considerations:

Requires 4 (1.5V) AA batteries (not included)

⚠WARNING: 

CHOKING HAZARD - Small parts. Not for children under 3 years.