(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Problem: http://img147.imageshack.us/img147/8509/physjc9.gif [Broken]

Additional info: mass of the lander 7750 kg, 1.790967742 is the mag of acceleration due to gravity, this info was found in earlier parts of the problem

2. Relevant equations

I used these 2 equations and set them equal

[1/2(kx^2)] * 3 = 1/2mv^2

3. The attempt at a solution

[1/2(11566.7)1.2^2] * 3 = 1/2(7750)v^2

solve for v, v= 2.53919 m/s, which was wrong

is the equation wrong?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Finding a landing speed from spring constants

**Physics Forums | Science Articles, Homework Help, Discussion**