hw2[1] - θ are given, determine the magnitudes of the...

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ME 244 Assignment 2 Spring 2010 Department of Mechanical Engineering, Yeditepe University Due date: 19 February 2010, Friday - 5 PM Policy: The assignments should be done by each student individually, not as group work. The due date and time is Friday 5 PM, one week after the assignment is given. No late submissions are accepted. The assignments should be submitted to the Teaching Assistant of the course, Batuhan Baturalp (Room A702). 1. The car B turns such that its speed is increased by dv B /dt = be ct . If the car starts from rest when θ = 0, determine the magnitudes of its velocity and acceleration when the arm AB rotates to θ = θ 1 . Neglect the size of the car. ( b = 0 . 5 m/s 2 , c = 1 s - 1 , θ 1 = 30 , ρ = 5 m). 2. The mechanism of a machine is constructed so that for a short time the roller at A follows the surface of the cam described by the equation r = a + b cos θ . If ˙ θ and ¨
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Unformatted text preview: θ are given, determine the magnitudes of the roller’s velocity and acceleration at the instant θ = θ 1 . Neglect the size of the roller. Also determine the velocity components V Ax and V Ay of the roller at this instant. The rod to which the roller is attached remains vertical and can slide up or down along the guides while the guides move horizontally to the left ( a = 0 . 3 m, b = 0 . 2 m, ˙ θ = 0 . 5 rad/s, ¨ θ = 0 rad/s 2 , θ 1 = 30 ◦ ). 3. For a short time the arm of the robot is extending so that ˙ r remains constant, z = bt 2 and θ = ct . Determine the magnitudes of the velocity and acceleration of the grip A when t = t 1 and r = r 1 (˙ r = 0 . 45 m/s, b = 1 . 2 m/s 2 , c = 0 . 5 rad/s, t 1 = 3 s, r 1 = 1 m). 1 Figure 1: Question 1 Figure 2: Question 2 Figure 3: Question 3 2...
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This note was uploaded on 10/08/2011 for the course ME 244 taught by Professor Nezihtopaloglu during the Spring '11 term at Yeditepe Üniversitesi.

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hw2[1] - θ are given, determine the magnitudes of the...

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