What is the Thermal Energy Generated from Sliding Down a Curved Surface?

[saturdaykate]

I am stuck on this problem and I really need to figure it out or I will probably have to kill myself. Just saying. Also, I'm having the worst day of life, was fired from my job, and basically laughed at by my parents. Here is the problem:

A 60kg person starts from rest and slides down the curved surface from height of 7.0 meters. If the speed at the bottom is 2.8 m/s, find how much thermal energy due to friction was generated.

PLEASE HELP! THANK YOU IN ADVANCE.

 

[saturdaykate]

Oh, wait, I think I might have gotten the answer, does 3880.8J seem about right?

 

[fargoth]

yeah, you got it right.

 

[saturdaykate]

thank you, i really appreciate your help.

 

[chroot]

That seems correct.

- Warren

 

[agentlxl]

hey can u guys help me please

 

[agentlxl]

well the problem is
if you use a horizontalforce of 30.0N to slide a 12.0 kgwooden crate across a floor at a constant velocity, what is the coefficient of kinetic friction between the crate and the floor?
PLZ HELP ITS DUE TMRW THNX TO WHO EVER HELPS

 

[fargoth]

why the hell did you post your question inside someone else's thread?
make your own thread, and show us what you've tried to do so far so we can help youi figure out where you went wrong.