So what I am confused about now is that if my cart moves all the way so that the spring is fully stretched..is all pot energy in the spring? Or should i calculate the weight in there somehow.
sorry for that. Should have attached a picture. As you can see I am a newbie.
But your diagram is correct...except its flat. I can use the same method correct?
One of the problems I've encountered is how to plot the total length?
Oh, and say I want to calculate my total pot energy at the start , there is not friction, and the total energy is equal to my gravitational PE from my weight...but i don't know the height. And i can't use the next max...
our teacher just basically told us to find μk...μs being negligible and everything else is negligible. The pos decrease is quite a lot actually. Basically max at beginning is like about 1 m, and then next one is 0.9 m then the next 0.8.. Not exactly..but close
Homework Statement
I have an almost-frictionless air-hockey style ramp and i place it horizontally on a table. A little cart goes on top and on one end of the cart, i attach a string which connects to a pulley and then connected to a weight, thus pulling the cart to one side with the force of...