physics
posted by Bri .
Tarzan wights 820N, swings from a cliff at the end of a 20m vine that hangs from a high tree limb and initially makes an angle of 22 degrees with the vertical. Immediately after Tarzan steps off the cliff the tension in the cine is 760N. Choose a coordinate system for which the x axis points horizontally away form the edge of the cliff and the y axis points up. a) What is the net force acting on Tarzan in unitvector notation? b)What is the magnitude and dicection of the net force acting on Tarzan? c) What is the magnitde and direction of his acceleration?
first I found the foce of the vine in unit vector notation. And I got 285i + 705j. What would be the other equations I should use to solve all of the problems?
You only need to add the force of gravity, which is  820 N j:
F=(285i + 705j  820j) N =
(285i 115j) N
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