- #1
suspenc3
- 402
- 0
during a rockslide a 520kg rock slides from rest down a hillside that is 500m long and 300m high. The coeeficient of kinetic friction is 0.25. If the gravitational potential energy [tex]U[/tex] of the rock-earth system is zero at the bottom of the hill, what is the value of [tex]U[/tex] just beofre it slides?
I know this is wrong, but I tried:
[tex]U_g = mghcos \Theta[/tex]
[tex]U_g = 9.2 x 10^5J[/tex]
What do I do?
I know this is wrong, but I tried:
[tex]U_g = mghcos \Theta[/tex]
[tex]U_g = 9.2 x 10^5J[/tex]
What do I do?