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Concept Simulation $9\mathrm{.}1$ illustrates how the forces can vary in problems of this type. A hiker, who weighs $678$ N $,$ is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs $3120$ N $,$ and rests on two concrete supports, one on each end. He stops $\frac{1}{6}$ of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge $($a$)$ at the near end and $($b$)$ at the far end?

$($a$)$

Number $$ Units

$($b$)$ Number $$ Units

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