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  3. 20 points water striders walk on water by taking advantage...

Question: 20 points water striders walk on water by taking advantage...

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20 points) Water striders walk on water by taking advantage of surface tension; they live on the surfaces of ponds, vers, and even the open ocean. A team of scientists at MIT decided to build a robotic water strider to mimic the true striders locomotion and lean more about not just how it floats, but how it moves around the surface of the water (see picture below) Both the actual water strider and its robotic counterpart are held up by the surface tension acting along the (two) contact lines along the edge of the legs, as shown in figure (b) below. We will assume that the water strider legs can be modeled as circular cylinders. Each water strider has a pair of back legs, each with length L1 that is touching the water. It also has a pair of middle legs each with water-touching length L2, and a pair of front legs each with water-touching length 13-The surface tension of water is ơH20-0073N-m-1

. If the real water strider has leg lengths L0.60mm, L20.35mm, and L3 0.15mm, what is the maximum mass that can be supported by the six legs of the water strider? b. R f L-3.0cm, L2 2.0cm, and L obostrider has a mass of 0.35g and leg lengths o 1.0cm. What is the angle of depression of the water around the legs? (this is marked as θ in figure (b) below) Ly

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