- #1

- 41

- 1

(1/2)kx^2=Spring energy

K=(1/2)mv^2

U=mgh

Vf^2=Vi^2+2a(X-Xi)

F=ma

mg-Ff=ma

a=2.05 m/s^2

Vf^2=Vi^2+2a(X-Xi)

Vf^2=0+2(-2.05)(-36.4)

Vf=12.22 m/s

(1/2)kx^2=(1/2)mv^2

(1/2)(13600)x^2=(1/2)(1640)(12.22^2)

x= 4.24 m (that didn't work)

(then I tried this)

(1/2)kx^2=(1/2)mv^2+mgh

x=10.20 m (still wasn't correct)