Your friend provides a solution to the following problem. evaluate her solution. the problem: jim (mass 50 kg) steps off a ledge that is 2.0 m above a platform that sits on top of a relaxed spring of force constant 8000 n/m. how far will the spring compress while stopping jim? your friend's solution: (50kg)(9.8m/s2)(2.0m)=(1/2)(8000n/m )x x=0.25m4.

No its wrong

Correct compression is 0.41

Explanation:

After jumping from 2m height on spring attached platform platform is compressed a distance x(let).

So work done by gravity on Jim is converted into spring potential energy.

k=8000 N/m

mass of Jim =50 kg

Solve this quadratic one solution is positive and other is negative.

positive one is our answer = 0.41 m

. west

3. dark matter

empty space could also be a simple vacuum