The wooden Friction Block has felt on two sides, so the frictional coefficients for felt or wood can be measured. It also fits into the dynamics cart tray so the cart can run on its wheels, or it can be turned upside down to run on the Friction Block without changing the mass.
- Dimensions: 13 cm x 5 cm x 1.7 cm
- Approximate Mass: 110 g
WARNING: CHOKING HAZARD!
Small parts. Not for children under 3 years.