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t1_2007_su_retest_no_answers - equation 2 v 3 1 a-= where v...

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MIME 2300 Retest 1 Name _______________________ Section ______ June 20, 2007 In all the problems show all equations used with variables and then with values substituted so partial credit can be given wherever possible. Give units on all answer. On problems where appropriate, draw coordinate systems, datums, FBDs, K.Ds or velocity diagrams. 1. Find the acceleration of the 20 lbf block shown in the figure if the coefficient of kinetic friction is 0.3 and the coefficient of static friction is 0.4. (14 points) Page 1 of 4 1 __________/14 2 __________/29 3 __________/25 4 __________/32 Total ______/100 40º F=10 lbf y x 20 lbf

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2. If the end of the rope F is being pulled with a speed of 10 m/s at the point when x is 2 m, what is the velocity of the weight B. (29 points) Page 2 of 4 F V F E D C B x 7 m
3. The acceleration of a vehicle is inversely proportion to its velocity due to wind resistance as given by the

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Unformatted text preview: equation 2 v 3 1 a--= where v is in m/s and a is in m/s 2 . If the vehicle has an initial velocity of 10 m/s, determine the distance it will have traveled when the velocity is 2 m/s. (25 points) Page 3 of 4 4. The smooth surface of the vertical cam is defined in part by the curve ( 29 [ ] m 4 . sin 3 . r + θ = . If radians 8 3 t 3 -π + = θ , where t is in seconds, write the equation(s) of motion for the roller when t = 2 s. The spring attached to the 4 kg roller has a stiffness, k = 50 N/m and an unstretched length of 0.2 m. To save time, do not compute any accelerations or acceleration components and do not solve equations of motion for any forces! (32 points) Page 4 of 4...
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t1_2007_su_retest_no_answers - equation 2 v 3 1 a-= where v...

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