Question:
A force of 6 N is applied to a helical spring and it extends by 12 cm. If two identical springs are hung in parallel and attached a load of 3 N on them. Find the resulting extension of the system?
The system means total extension of 2 spring or 1 spring which has the same extends with the others? Shall the mass of the spring be negligible? If the spring has / no a certain mass, more springs more extension when the same force attached?
more springs more extension?
2007-05-29 11:15 pm
回答 (1)
2007-05-30 6:49 am
✔ 最佳答案
A force of 6 N is applied to a helical spring and it extends by 12 cm. If two identical springs are hung in parallel and attached a load of 3 N on them. Find the resulting extension of the system?F = kx
6 = k(12)
k = 0.5N/cm
Two identical springs are hung in parallel，the force constant K = 2k
F = 2Kx
3 = 2*0.5x
x = 3cm
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