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Calculating Impact Force for 65 Tonne Object Lowered by Crane: Case Study
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[QUOTE="CWatters, post: 5473598, member: 423469"] I suspect this question requires specialist knowledge rather than general physics knowledge.. In a calm sea, if the crane lowered the weight very slowly there would be very little impact force. However you mention a seastate hs = 0.5. Presumably this causes the boat carrying the crane to rock which raises and lowers the weight potentially increasing the impact velocity even if the crane is hardly moving? That would effect the impact forces but without knowledge about how the seastate effects the motion of the weight I can't see a way to proceed. Is the red object floating? Does that also move up and down with the waves? There is another problem. It's not possible to calculate the impact [U]force[/U] between two colliding objects without knowing more about their physical properties. Are they very hard or very soft objects? For example if you fall over and bang your head on the ground the force you experience will depend on the hardness of the ground. Is it concrete or mud? They say you should never bang two hammers together because being very hard the forces at even low speeds can be very high causing the iron to shatter. So from a general physics perspective I'm not sure you have sufficient information to answer the question. Perhaps there is data/assumptions that are specific to this industry you can use? [/QUOTE]
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Calculating Impact Force for 65 Tonne Object Lowered by Crane: Case Study
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