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 27.0° above the horizontal. One child, with a mass of 43.0
kg, is hanging 1.00 m along the branch from the tree
trunk. The other child, with a mass of 35.0 kg, is
hanging 2.20 m from the tree trunk. What is the magnitude
of the net torque exerted on the branch by the children? Assume
that the axis is located where the branch joins the tree trunk and
is perpendicular to the plane formed by the branch and the
trunk.