I have attached a picture so that it is easier to visualize this problem. The information is all in it. The number scribbles are just my attempts to solve it: http://i65.tinypic.com/2qlbn9h.jpg The current topic we are on in class is Newton's Laws and we have covered moments and equilibrium previously, as well as resolving forces. So I assume that F = m * a may be involved, possibly equilibrium if my attempt is correct, but it does not tell you what to use. This is for AS-Level Physics. I used F = m*a to get the force in the opposite direction of the friction like 70 * 3.4 and 850 * 3.4 (it doesn't say the boat is accelerating but I assumed so as the person is accelerating something has to make him accelerate). Then I said that the forces to the right must equal the forces to the left, but I am not sure if this applies to accelerating objects, but anyway I said that 3128 (sum of the 2 m*a) = x + 325 and calculated x (The tension) from there. But I have a feeling its incorrect.