• Answer:

a)

b)

c) {[k3 + (k1-1 + k2

-1)-1]-1 + k4-1]-1

• Answer:

• v = sqrt(2gh)

• F = -kx – mg, to the right

• W = -kxs2/2 – mgxs

• Wf = 2mgxs

• h’ = h – 2xs

• xs = [-mg + sqrt(2m2g2+2kmgh)]/k

Monday, November 1:

• something to do with potential energy