Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 27 degree above the horizontal. One child, with a mass of 44.0 kilogram, is hanging 1.30 meter along the branch from the tree trunk. The other child, with a mass of 35 kilogram, is hanging 2.10 meter from the tree trunk. Find the magnitude of the net torque exerted on the branch by the children? Suppose that the axis is located where the branch joins the tree trunk and is perpendicular to the plane formed by the trunk and the branch.