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100S11_PS5

# 100S11_PS5 - ENES 100 Introduction to Engineering Design...

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ENES 100 Introduction to Engineering Design Spring 2011 1 of 3 Problem Set #5 Due: In class on Mar. 7 (M) or Mar. 8 (Tu) Reading: Chapter 5 of the course text on Hovercraft Motion and Control Problems: 1. In an effort to save some time, your team decided to use the hovercraft base structure design described in detail in Chapter 7 of your ENES 100 textbook. This design consists of identical top and bottom decks made out of pink foam ( foam = 30 kg/m 3 ) which are attached together with 4 identical balsa support bars. Each support bar has a length of 240 mm, a width of 40 mm, a height of 50 mm, and a mass of 100 g. Once built, you’ve sadly learned that the vehicle’s structure is not very well balanced. (a) Determine the coordinate distance X from the back of the craft at which you must place a 50 g ballast for the vehicle to be balanced (i.e., for the center of pressure and the center of gravity of the base structure system to be coincident).

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100S11_PS5 - ENES 100 Introduction to Engineering Design...

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