Recent content by taylorkrauss

That was perfect! Thank you!

Hmm...I haven't learned Gauss's Law though. This wants Gravitational Force and Gravitational Potential not Electric Force and EPE, so I'm not sure how I'd apply Gauss (after googling, I saw it was a theroem for electric potential). How would you go about using Gauss's Law?

Homework Statement At what distance r inside the Earth is the gravitational force due to Earth the same as at the distance r = 4RE (where the latter distance is clearly outside Earth)? Assume uniform density of Earth. Homework Equations conservation of energy? TME = GPE + KE...

A uniform board length L hinged about its lower end, held at θ above the horizontal is released from rest. As it passes through the horizontal what is the tangential acceleration of its outer tip? At first when I attempted this, I applied conservation of energy. (1/2)mv^2+mgh=(1/2)mv^2 +...