A uniform plank of length 5.8 m and weight 217n rests, Ask an Expert

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Q. A uniform plank of length 5.8 m and weight 217 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 460 N walk on the overhanging part of the plank before it just begins to tip?

Q. A brass cube 4.0 cm on each side is placed in a pressure chamber and subjected to a pressure of 2.20 107 N/m2 on all of its surfaces. By how much will each side be compressed under this pressure?

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