Force of a spring

  • #1

Homework Statement


What force is necessary to stretch a spring 48 cm, if the spring constant is 270 N/m?

Homework Equations



1/2kx^2

The Attempt at a Solution


tried plugging everything into equation and got 31 but it is wrong. Any help would be greatly appreciated
 

Answers and Replies

  • #2
gneill
Mentor
20,945
2,886
What units came out of your attempt to plug in value to that equation? Did you check to see that they matched what you're looking for?

Look for a more relevant Relevant equation. Hint: Hooke's Law.
 
  • #3
130
31
The quantity you're looking for is force. The quantity your equation gives you is?
 

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