Help getting started - just advice, no answers please

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To solve the problem of determining the largest velocity Vc of the cradle after moving 45 cm, start by applying Newton's second law, F=ma, to understand the forces acting on the system. Creating a free body diagram will help visualize the forces on the cradle and the disks. Consider the principles of rotational motion and energy conservation, as the disks roll without slipping. Relevant equations for rotational dynamics and kinematics will be essential in deriving the solution. Focusing on these areas will provide a solid foundation for tackling the problem effectively.
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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.
 
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A starting point is F=ma. Then consider that you have other information given. What principle could make use of that information?
 
f=ma as pongo mentioned
probably start with a free body diagram which identifies the forces on the body u r interested in.
 
Thread 'Have I solved this structural engineering equation correctly?'

Thread 'Have I solved this structural engineering equation correctly?'

Hi all, I have a structural engineering book from 1979. I am trying to follow it as best as I can. I have come to a formula that calculates the rotations in radians at the rigid joint that requires an iterative procedure. This equation comes in the form of: $$ x_i = \frac {Q_ih_i + Q_{i+1}h_{i+1}}{4K} + \frac {C}{K}x_{i-1} + \frac {C}{K}x_{i+1} $$ Where: ## Q ## is the horizontal storey shear ## h ## is the storey height ## K = (6G_i + C_i + C_{i+1}) ## ## G = \frac {I_g}{h} ## ## C...
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