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.
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