MIT2_007s09_hw02

MIT2_007s09_hw02 - MIT OpenCourseWare http:/ocw.mit.edu...

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MIT OpenCourseWare http://ocw.mit.edu 2.007 Design and Manufacturing I Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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Page 1 of 4 2.007 Design and Manufacturing 1 Homework #2 Servomotors, Mechanisms & CAD NAME:____________________________________________________________ Date Issued: Tuesday 24 FEB, 11AM Date Due: Thursday 5 MAR, 11AM Please answer the following 4 questions showing your work to the extent possible within the allotted time. This assignment should not take more than 6 hours. Point allocations are listed for each question. The points sum to 100. As described in the course policies document, this is one of four homeworks you will complete in this course. Each homework counts as 5% of your total grade. You will submit your work at lecture by hardcopy or via the course web site. 1) (25 total) You ’re building a small, electric -powered vehicle to climb up a 20 degree ramp (similar slope as the ramp into the contest starting box). The vehicle will be operated by two servomotors that can continuously rotate the output shafts that attach directly to wheels on the left and right sides of the vehicle . The manufacturer’s specifications indicate each servo is capable of a no load speed of 50 rpm and a stall torque of 0.3 N*m (similar to the specs of the
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MIT2_007s09_hw02 - MIT OpenCourseWare http:/ocw.mit.edu...

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