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## Homework Statement

The figure shows a frame with a 100N object hanging on it. Determine the magnitude and direction of forces exerted on AB and BC respectively.

## Homework Equations

∑Fx=0, ∑Fy=0, ∑M=0

## The Attempt at a Solution

I believe this question is unsolvable. The free body diagram of the frame is as follows:

There are 4 unknowns in the diagram but we can only write down 3 equations. Hence, there is no way we can solve this problem.

Is my reasoning correct?