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Unformatted text preview: Name Section __ THE PENNSYLVANIA STATE UNIVERSITY
Department of Engineering Science and Mechanics Engineering Mechanics 11 “Exam 2
March 2? 2006
6:304:45 pm (75 minutes) Problem 1 Problem 2 Problem 3 Total Problem 1 12 in. 4 '111‘ #200 1b An escalator is driven by a chain connected to \
point A which supports a force F. The rollers at
points A and B ride in a loose ﬁtting track. If a
person weighing 2001b is being lifted at a steady
speed and other weights may be neglected, de—
termine the required chain force F and the reac—
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them for prolonged periods of time. If point A has coordinates
(2,7,8)mm,131=(0.87§— 0.3j— 0.11%)N,F; = (—0.72— 0.1j+
0.05 N and A? : (0.15+1.4j— 0.3 N  mm, determine an
equivalent force system at point 0. Problem 3 (33%) Reduce the given distributed
force system and moment at A
to an equivalent force system
consisting of a single force. E" uewsexwimt 7%.»: digit;
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This note was uploaded on 10/15/2008 for the course EMCH 211 taught by Professor Ventsel during the Spring '06 term at Pennsylvania State University, University Park.
 Spring '06
 VENTSEL

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