The crane arm is pinned at point A and has a mass of 200 kg whose weight is acting at a point 2 m to the right of point A. The mass of the block is 800 kg. If the crane is in equilibrium, find (a) the magnitude of the force exerted on the arm by the hydraulic cylinder BC, (b) the support reactions at point A.

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a)

b) |A| = 20.3 KN

Explanation:

let's use the equilibrium equation

The magnitude of the force exerted on the arm by the hydraulic cylinder BC = 28.6KN

b) We now have

Therefore |A| = 20.3KN

Note 'E'represents summation

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explanation: