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22-01-2020
Physics

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The 9-m boom AB has a fixed end A. A steel cable is stretched from the free end B of the boom to a point Clocated on the vertical wall. If the tension in the cable is 3 kN, determine the moment about A of the force exertedby the cable at B.

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MechEngineer MechEngineer

23-01-2020

Answer:

27000 Nm

Explanation:

The boom end at A is fixed and end at B is subjected to a 3kN force. Boom AB has length of 9m. The moment about A is the product of force 3kN (3000 N) at B and the moment arm of 9m

M = FL = 3000 * 9 = 27000 Nm

So the moment about A is 27000 Nm

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