{"product_id":"united-scientific®-friction-apparatus","title":"United Scientific® Friction Apparatus","description":"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.","brand":"United Scientific Supplies","offers":[{"title":"Default Title","offer_id":49962354311445,"sku":"USSFRAP01","price":43.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/FRAP01_20Friction_20Apparatus.jpg?v=1781073153","url":"https:\/\/unitedsupplycorp.com\/products\/united-scientific%c2%ae-friction-apparatus","provider":"United Supply Corp.","version":"1.0","type":"link"}