- Messages
- 140
- Reaction score
- 61
- Points
- 38
well here they used the formula E=1/2*F*xhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_21.pdf
Q3 (a), how did they get 'k' as 180 in the energy formula?!
they didn't used 1/2*k*x^2...........
they replaced kx with F from F=kx