Midterm1-2016.pdf - BREE 210 Fall 2016 Midterm 1 October 7...

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BREE 210, Fall 2016 Midterm 1: October 7, 2016 Examiner: Prof. Hamid Akbarzadeh (Closed book, Calculators are allowed, 120 min) Student Name: Student Number: Question 1) (KB.2) Evaluate the following to three significant figures and express each answer in SI units using an appropriate prefix: (28 ??)(0.0458 ??)/(348 ??) . (5 Points) Question 2) (KB.2) The pascal (Pa) is actually a very small unit of pressure. To show this, convert 1 𝑃? = 1 ?/? 2 to lb/?? 2 . Atmospheric pressure at sea level is 14.7 ??/𝑖? 2 . How many pascals is this? (5 Points) Question 3) (PA.3) If the magnitude of the resultant force acting on the bracket is to be 450 N directed along the positive u axis, determine the magnitude of 𝐹 1 and its direction . (15 Points)
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Question 4) (DE.3) A force of 𝐹 = {−40 ? ⃗⃗ } ?? acts at the end of the pipe. Determine the magnitude of the components 𝐹 1 and 𝐹 2 which are directed along the pipe’s axis and perpendicular to it. (15 Points) Question 5) (PA.3) The springs BA and BC each have a stiffness of 500 N/m and an unstretched length of 3 m. Determine the horizontal force
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