Oh I think I get it now. mvr = (Ia + Ib)w
So once I find the angular velocity right after impact, the rest of my equations hold, right?
Total energy = Kinetic Energy + Gravitational Potential Energy?
Homework Statement
You have constructed a simple catapult which basically consists of a 4 meter long rod of negligible mass attached to a fulcrum point offset from the center of mass by 1.5 meters. You decide to launch a m2 = 0.100 kg mass from the long end of the rod by dropping a m1 = 20.0...
Homework Statement
A 8.00 kg stone lies at rest on a spring. The spring is compressed 10.0 cm (.1 m) by the stone. What is the spring constant?
Homework Equations
F = -kx
E = (1/2)kx^2
U = mgh
The Attempt at a Solution
The solution provided uses a net force equation balancing Hooke's...