Two crewmen pull a boat through a lock. One crewman pulls with a force of F1=125N at an angle of theta=32 degrees relative to the forward direction of the raft. The second crewman, on the opposite side of the lock, pulls at an angle of 45 degrees. With what force F2 should the second crewman pull so that the net force of the two crewmen is in the forward direction?

Answer is in N.

Question

Two crewmen pull a boat through a lock. One crewman pulls with a force of F1=125N at an angle of theta=32 degrees relative to the forward direction of the raft. The second crewman, on the opposite side of the lock, pulls at an angle of 45 degrees. With what force F2 should the second crewman pull so that the net force of the two crewmen is in the forward direction?

Answer is in N.

ganpat · Answer

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For two forces to be equal , 

F1 cos 32 = F2 cos 45.. 
Given F1 = 125..

Get F2...