question archive A beam resting on two pivots has a length of L = 6

A beam resting on two pivots has a length of L = 6

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A beam resting on two pivots has a length of L = 6.00m and mass M = 107.4 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot placed a distance l = 4.00m from the left end exerts a normal force n2. A woman of mass m = 60.7 kg steps onto the left end of the beam and begins walking to the right as in the figure below. The goal is to find the woman's position when the beam begins to tip.

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