1) a spring has an elasticity constant of 225 newtons/meter. What is its restoring for when it's compressed of 20 centimeters ?
2) with what force must we pull a spring to pull 8 centimeters if its elasticity constant is 2 newton/cm ?
3) we suspend a weight of 4.08 kg to a spring and it pulls 8.5 cm
a) what is the elasticity constant
b) what force do you need to put to compress the spring 15 cm ?
I honestly do not know beside Lnat, m1, L1, L2 and m2 I guess
Something with Hooke's law
The Attempt at a Solution
There's something missing for me to understand this problem :|