Wow, someone please confirm my number (I've double checked mine like 4 times)…
I got only 0.823 joules of Kinetic Energy for a 1” steel ball falling 50 inches. My method:
Gravitational Potential Energy = Kinetic Energy ***Losses due to air resistance ignored*** <-- This is a CONSERVATIVE assumption
Mass x Gravity x Height = Gravitational Potential Energy
Explanation: All of the Gravitational Potential Energy at 50 inches is transferred into Kinetic energy at zero inches…hence they are equal.
Gravity = 9.81 m/s
Density of steel = 7700 kg/m3
Height = 1.27 meters (50”)
I won’t completely spoon feed things to see if someone who knows what they’re doing gets the same answer as me.
Ronin 49 Team Member
Last edited by Flatlander; March 10th, 2010 at 18:42..