Two children are fighting over a toy box of mass   kgm=35.0kg in a sand box. Child B pulls at an upward angle of θ=68.0° with force   NFB​=56.0N while Child A pulls on the other side horizontally with a force ��FA​. If the coefficient of static friction between the box and sand is μs​=.342 how much force must Child A pull with in order to just start moving the box in their direction? Pick the correct answer

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