United Scientific Friction Apparatus

This set includes a friction block and a friction board, both made of high quality, smoothly finished pine wood.  The friction block has a hook for a spring scale and three compartments for additional weights.  It can be placed face-up or sideways.  Students can vary the weight or area of contact to test their impact on the frictional force.  The set comes with three 50g weights and a 100g spring scale.  The board is 20" x 2" and the block is 4" x 1.5" x 1".  Includes an activity guide Shipping weight: 1.1 Lbs., Dimensions: 20" x 2.25" x 2".