Exam 1 Solution - EGM 3401 Fall 2011 Exam#1 Solution 2/4...

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EGM 3401 – Fall 2011 Exam#1 Solution 1/4 Problem 1 (10 points) A car is traveling at a constant speed of 30m/s. The driver then applies the brakes at A and thereby reduces the car’s speed at the rate of a t = ( ! 0.08 v ) m/s 2 , where the car’s speed v is in m/s. (1) - Express the speed of the car as a function of time (2) - Express the distance travelled by the car as a function of time (3) - Determine the acceleration of the car just before it reaches point C on the circular curve. It takes 15s for the car to travel from A to C.
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Unformatted text preview: EGM 3401 Fall 2011 Exam#1 Solution 2/4 EGM 3401 Fall 2011 Exam#1 Solution 3/4 Problem 2 (10 points) The motor at C pulls in the cable with an acceleration a c = (3 t 2 ) m/s 2 , where t is in seconds. The motor at D draws in its cable at a D = 5 m/s 2 . If both motors start at the same instant from rest when d = 3m, determine (a) the time needed for d=0, and (b) the velocities of blocks A and B when this occurs. EGM 3401 Fall 2011 Exam#1 Solution 4/4...
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Exam 1 Solution - EGM 3401 Fall 2011 Exam#1 Solution 2/4...

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