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Physics 10 Online
OpenStudy (anonymous):

An 18.8ft long uniform plank weighs 202lbs and is being held up at both ends by two forces. There are two objects sitting on the plank. A 128lb object is 4.60ft from the left end and a 226lb object is 11.4ft from the right end. How much force is needed to lift each end of the plank?

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