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How do you find the reaction at a pivot when a plank is in equilibrium?
Wiki User
∙ 13y ago
If the plank is in equilibrium, then it's not moving.
If it's not moving, then the forces on it must add up to zero ... otherwise it would
be accelerating.
At the pivot, there are two forces: the weight of the plank is directed down, and
the reaction is directed up.
The two forces must add up to zero.
Can you take it from there ?
Wiki User
∙ 13y ago
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To find the reaction force of a cantilever, you can sum the moments about the fixed end of the cantilever (often where it's attached to a wall or support). The reaction force will balance the external load applied to the cantilever to maintain equilibrium. Equation of equilibrium can be used to solve for the reaction force.
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To find the equilibrium concentration of NO, first calculate the equilibrium constant expression using the given concentrations of O2 and N2. Then, rearrange the equilibrium constant expression to solve for the concentration of NO. Finally, substitute the values of O2 and N2 concentrations into the rearranged expression to find the equilibrium concentration of NO.
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At equilibrium, the reaction mixture does not have 50% reactants and 50% products because the reaction does not necessarily go to completion, meaning not all reactants are converted to products. The equilibrium position is determined by the relative rates of the forward and reverse reactions, leading to different concentrations of reactants and products depending on the equilibrium constant for that reaction.
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