Second Law Of Motion Apparatus, 25 Cm Long Unit Has A 10 mm Rod. It May Be Horizontally Clamped To A Support Stand Or Table Clamp. Complete With Two Steel Balls, Substantial Metal Casting And The Entire Mechanism Is Visible, The Spring Gun Offers Two Tensions
HookS Law Spring Set, Set Of Five Different Springs Constants, The Set Has Five Different Springs Constants For In Depth Investigation With Above HookS Law Apparatuses.