A 210-kg box rests on a frictionless ramp with a 143deg, Ask an Expert

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A 21.0-kg box rests on a frictionless ramp with a 14.3° slope. The mover pulls on a rope attached to the box to pull it up the incline. If the rope makes an angle of 38.4° with the horizontal, what is the smallest force F the mover will have to exert to move the box up the ramp?

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