Cart rolling on table

  • Thread starter Walid11
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  • #1
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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?


Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
rock.freak667
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The Attempt at a Solution


??



Conservation of energy might aid you here.
 
  • #3
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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.
 
  • #4
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well it moves at 9.3 m/s horizontally
 
  • #5
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well it moves at 9.3 m/s horizontally

Then it's conservation of Kinetic Energy to Potential ....
 
  • #6
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what's the formula for that?
 
  • #7
ideasrule
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Well, kinetic energy is (1/2)mv^2 and potential energy is (1/2)kx^2. Have you seen these equations before?
 
  • #8
rock.freak667
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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.
 
  • #9
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yeah, i just couldn't differentiate. Thank you
 
  • #10
ideasrule
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Oops, I didn't read the question and assumed the potential energy bucher was talking about was spring potential energy. Apologies!
 

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