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why is reaction force on p zero and what is the reaction force at q?
(edited 8 years ago)
Original post by runny4
http://i-want-to-study-engineering.org/q/construction_worker1/
why is reaction force on p zero and what is the reaction force at q?


As the beam begins to tip, it will lose contact with p, therefore no reaction force.
Reaction force at q is (mass of bert + mass of joe + mass of beam)*9.81 = 3531.6 N

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