- #1

mst3kjunkie

- 16

- 0

a. What spring constant should you specify?

b. What is the maximum speed of a 350 kg car if the spring is compressed the full amount?

I'm having trouble with part a. Here's what I've got so far:

__known:__

m=400kg

y0= 5m

y1= 15m

y2= 0m

v1= 0 m/s

s0= -2.0m (compression of spring)

s1= 0m

__to find:__

k

v0

.5mv0^2+mgy0+.5kS0^2 = .5mv1^2+mgy1+.5kS1^2

200v0^2+19600-2k = 58800

am I on the right track? how do I find out what I need to get to solve for part a of the problem?