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# HW2 - horizontal acceleration(in “g”s could you subject...

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Homework 2 Due: Monday Sept 12 1. A tank holds two different liquids: a heavy one on the bottom with a density of 1 g/cc and a lighter one above it with a density of 0.6 g/cc. A sphere is immersed in the tank and is seen to rest in equilibrium with exactly half of it in the dense fluid and half in the light. What is the density of the sphere? 2. A tank of water 6ft deep has a door hinged at the bottom as shown. The door is 1ft square. And makes a 45 deg angle from the vertical. If you apply a point force somewhere on the door, what is the smallest force you could apply to open the door and where would you apply it? 3. A glass of water is 10cm deep and has 100cc of water in it up to the 8cm level. How much

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Unformatted text preview: horizontal acceleration (in “g”s) could you subject the glass to before the water starts to spill over the lip. 4. There is a plexiglass viewing window in the shape of a quarter cylinder mounted at the bottom of a large aquarium tank (see the sketch). The window radius is 1 ft and it’s length is 3 ft. The depth of water in the aquarium is 10ft. Determine the resultant forces exerted by the window on the vertical and bottom walls. Determine the net moment about the junction of the window with the lower wall (A in the sketch). Remember that forces and moments are vectors....
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