- #1
nysnacc
- 184
- 3
Homework Statement
Homework Equations
Conservative of energy
mg(y2-y1) +1/2 k (s2-s02) = 1/2 mv12 +1/2 mv22
The Attempt at a Solution
v1 = 0 at rest
y2 = 0 bottom
What I got is v2 = 8.20 m/s but not correct,
I don't know how I can take into account the tension..
Fspring = -ks = -4000 N/m * 0.2 m = 800 N at position 2, isn't it? why it says 500 N?