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For thousands of years in the past and even in some places today people often carried...

For thousands of years in the past and even in some places today people often carried objects on their shoulders or heads. when weight was very heavy more than one person carried the item. in a typical situation let us assume that 70 N bag of cement is placed 5.3 m from one end of the plank that is 14 m long. The plank itself weighs 25 N. Two strong men volunteered to pick up the plank, one at each end. How much weight must each support?

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