Recent content by scolaiw

I am thinking 0.5mv^2 + mgh = 0.5mv^2 + mgh and solving for second h.

Ok I've exhausted just about all of my effort and still not getting it. Physics is hard for 17 year old :P. Can you please tell me the first line of the equation?

Yeah that's what I don't get, how can you get the total mechanical energy from so little information? Thanks so far btw.

How come no one replies...?

I still don't get it... How can you do so, without knowing the mass of "cart"? Where does all the velocities factor into this?

Question in this link (includes diagram): http://b.imagehost.org/view/0431/photo" I am assuming it require Energy equations The attempt at solution = Fail Please HELP!

Thanks for the welcome! I see about displacement. (Forgot displacement is a vector quantity - sad face) About the potential energy, is potential energy the same as the work done? So in this case, the area bound by the line and the x-axis from 0 to 0.5 metres?

A graph shows the Force of a spring (y axis) against Displacement (x axis) in a linear function. An obvious point for the gradient is the point (0.5 metres, 140 Newtons). What is the spring constant and how much energy is stored in the spring when it is compressed by 0.5 metres? Hope the...