posted by Kelsey on .
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 27.3° above the horizontal. One child, with a mass of 40.8 kg, is hanging 1.24 m along the branch from the tree trunk. The other child, with a mass of 36.3 kg, is hanging 2.09 m from the tree trunk. What is the magnitude of the net torque exerted on the branch by the children?
I would 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.