As shown, a pipe is anchored to a wall at point A. (Part B figure) During the pi

Question

As shown, a pipe is anchored to a wall at point A. (Part B figure) During the pipe's installation, several forces are applied to the pipe at different locations. If F1 = 79.5 N, F2 = 51.5 N, F3 = 71.5 N, F4 = 52.0 N, d1 = 0.106 m, d2 = 0.213 m, and d3 = 0.272 m, what is MRA, the net moment about point A due to these forces? Assume that moments acting counterclockwise about point A are positive whereas moments acting clockwise are negative. Express your answer numerically in newton-meters to three significant figures.

Explanation / Answer

Net moment about A will be M = F1*d2 - F2*d2 - F4*(d3-d1)
By putting values, M = 79.5*0.213 - 51.5*0.213 - 52*(0.272-0.106) = -8.572 Nm

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