# Cart rolling on table

## Homework Statement

125N of force are required to compress a spring by 1.04m. The cart rolls across the table at a constant speed. It then rolls up an inclined board and comes to rest. How high above the table is the cart when it stops?

rock.freak667
Homework Helper

## The Attempt at a Solution

??

Conservation of energy might aid you here.

There's not enough information to make any calculations. But from what I can tell from the problem, it's just the conservation of spring energy to potential energy.

well it moves at 9.3 m/s horizontally

well it moves at 9.3 m/s horizontally

Then it's conservation of Kinetic Energy to Potential ....

what's the formula for that?

ideasrule
Homework Helper
Well, kinetic energy is (1/2)mv^2 and potential energy is (1/2)kx^2. Have you seen these equations before?

rock.freak667
Homework Helper
what's the formula for that?

Uhm I assume the spring-cart system is initially at rest. So then you want all the potential energy of the spring to be converted into gravitational pe (mgh). You need to get h.

yeah, i just couldn't differentiate. Thank you

ideasrule
Homework Helper
Oops, I didn't read the question and assumed the potential energy bucher was talking about was spring potential energy. Apologies!