15-147. Determine the magnitude of force F as a function
Chapter 15, Problem 15-147(choose chapter or problem)
Determine the magnitude of force F as a function of time, which must be applied to the end of the cord at A to raise the hook H with a constant speed \(v=0.4 \mathrm{\ m} / \mathrm{s}\). Initially the chain is at rest on the ground. Neglect the mass of the cord and the hook.The chain has a mass of 2 kg/m.
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