Help getting started - just advice, no answers please

[whisperer]

Homework Statement

The 9 N cradle is supported as shown by two uniform disks that roll without slipping at all surfaces of contact. The weight of each disk is w=6 N and the radius of each disk is r=10 cm. knowing that the system is initially at rest, determine the largest velocity Vc of the cradle, for the three cases shown below, after it has moved 45 cm.

[PLAIN]http://www.pimpmyshu.com/images/stories/dyn1.jpg I'm having trouble getting started with this question so I was hoping for some advice on what areas to look into that would help with this question and where I could find relevant equations etc that I could use to solve it.

 

[pongo38]

A starting point is F=ma. Then consider that you have other information given. What principle could make use of that information?

 

[kentigens]

f=ma as pongo mentioned
probably start with a free body diagram which identifies the forces on the body u r interested in.