Posted by **bülent** on Tuesday, November 20, 2012 at 2:09pm.

A mass m1 = 7.65 kg, is at rest on a frictionless horizontal surface and connected to a wall by a spring with k = 67.9 N/m, as shown in the figure. A second mass, m2 = 5.29 kg, is moving to the right at v0 = 15.3 m/s. The two masses collide and stick together.

the figure is

htt p://s2.dosya.tc/server22/DIDqtx/P043figure.png. html

a) What is the maximum compression of the spring?

(in m) 2.731 m

b) How long will it take after the collision to reach this maximum compression?

(in s) 0.6857 s

i tried everything ,just found out the second one but still have a problem about the first one.

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