Calc 3 problem

When Mark's minivan gets stuck in the mud, Shaojie comes to help. They fix ropes to the same point on the front of the van (point P). Marks pulls with 120 N of forcein the direction of <2,3,1> from P, and Shaojie pulls with 135 N in the direction <-2,4,1> from point P.

a.) Find the individual forces, as vector quantities, applied to the van by Mark and Shaojie's ropes.

b.) When they pull, the car doesn't budge. With what horizontal force does the van resist the feeble attempt of your instructors. Find the magnitude of this resistingforce as well as the force vector.


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