N Nassah New member Jul 11, 2009 #1 A rock of mass 200 g is attached to a 0.75 m long string and swung in a vertical plane. What is the speed that the rock must travel so that its "weight" at the top of the swing is zero?
A rock of mass 200 g is attached to a 0.75 m long string and swung in a vertical plane. What is the speed that the rock must travel so that its "weight" at the top of the swing is zero?
