- #1
andrewwg94
- 2
- 0
Homework Statement
Ok so I had this problem on my quiz today and I am really anxious to see if i got it right.
It went something like this:
You have a frictionless horizontal platform and a ramp with kinetic friction of 0.3. The ramp is 20 degree of the ground. A 2 kg block/object is launched by a spring with k=1000 N/m at the beginning of the horizontal ramp. The spring is stretched back 20 cm. So the idea is that it is launched on the horizontal platform before eventually going up the ramp. use 9.8 for g.
Homework Equations
I used KEi + PEi - Wfriction = KEf+PEf
The Attempt at a Solution
I basically found the KE due to the spring to be 20N. Then using that i calculated work lost due to friction. P. Energy at top of ramp = mgh. so i solved for h.
I got h=.7385
Everything made sense when i did it. I don't know if that's right though.