Gibbons, small asian apes, move by brachiation, swinging below a handhold to move forward to the next handhold. a 9.3 kg gibbon has an arm length (hand to shoulder) of 0.60 m. we can model its motion as that of a point mass swinging at the end of a 0.60-m-long, massless rod. at the lowest point of its swing, the gibbon is moving at 3.4 m/s . what upward force must a branch provide to support the swinging gibbon? express your answer to two significant figures and include the appropriate units.