4. The diagram shows a light rod of length 2m that is smoothly pivoted at O....

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4. The diagram shows a light rod of length 2m that is smoothly pivoted at O. A horizontal force of 200N acts at B, the centre of the rod and the rod is kept in equilibrium by a force acting perpendicular to the rod at A. 200 N 60 0 B A Find (a) the magnitude of the force at A, (b) the magnitude and direction of the reaction at the pivot. 4. The diagram shows a light rod of length 2m that is smoothly pivoted at O. A horizontal force of 200N acts at B, the centre of the rod and the rod is kept in equilibrium by a force acting perpendicular to the rod at A. 200 N 60 0 B A Find (a) the magnitude of the force at A, (b) the magnitude and direction of the reaction at the pivot.