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INTI INTERNATIONAL UNIVERSITY
BMEGI: BACHELOR OF ENGINEERING (HONS) IN MECHANICAL ENGINEERING
BCEGI: BACHELOR OF ENGINEERING (HONS) IN CIVIL ENGINEERING
BEEGI: BACHELOR OF ENGINEERING (HONS) IN ELECTRICAL & ELECTRONIC
ENGINEERING
EGR 2214/EGR2201: ENGINEERING STATICS
FINAL EXAMINATION: AUGUST 2013 SESSION
This paper consists of FIVE (5) questions. Answer all the questions in SECTION A and any
One (1) question in SECTION B in the answer booklet provided. All questions carry equal
marks.
1(a).
Figure Q1(a) illustrates a 5 m x 8 m sign of uniform density weighs 270 N and is
supported by a ball and socket joint at A and by two cables.
(i)
(ii)
(iii)
Draw the free body diagram for the system clearly indicating all forces
present.
(4 marks)
If ∑
is satisfied. Determine the tension in cable EC and cable BD.
(10 marks)
What is the magnitude of the reaction force at joint A .
(3 marks)
Figure Q1(a)
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1(b).
The pin-connected mechanism shown in Figure Q1(b) is constrained by a pin at A and
a roller at B. Determine the force P that must be applied to the roller to hold the
mechanism in equilibrium when  = 300. The spring is unstretched when  = 450.
Neglect the weight of the members.
(8 marks)
Figure Q1(b)
2(a).
Determine the internal normal force, shear force and moments at points F and E in the
frame shown in Figure Q2(a). Given the weight of the crate is 3kN.
(13 marks)
Figure Q2(a)
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2(b).
If the coefficient of static friction between the crate and the ground shown in figure
Q2(b) is µs = 0.5, determine the minimum coefficient of static friction between the
man’s shoes and the ground so that the man can move the crate without slipping.
Given the crate weighs about 150kg and the man weighs about 80kg.
(12 marks)
Figure Q2(b)
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3(a).
Referring to Figure Q3(a), locate the centroid of the C-Channel area and determine the
moment of inertia about the x and y axis.
(15 marks)
Figure Q3(a)
3(b).
Referring to Figure Q3(b), determine the moment of inertia of the composite area
about the y-axis.
(10 marks)
Figure Q3(b)
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4(a).
Determine the greatest force P that can be applied to the truss shown in Figure Q4(a)
so that none of the members are subjected to a force exceeding either 2.5kN in tension
or 2kN in compression.
(15 marks)
Figure Q4(a)
4(b).
If a clamping force of 300N is required at A, determine the amount of force F that
must be applied to the handle of the toggle clamp shown in Figure Q4(b).
(10 marks)
Figure Q4(b)
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5(a).
Using method of joints, determine the following force in member of the truss shown
in Figure Q5(a).
(i)
The reaction forces at Points E and C.
(ii)
The force in each member of the truss.
(iii)
Indicate if the members are in compression or tension.
(3 marks)
(7 marks)
(7 marks)
Figure Q5(a)
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5(b).
A 3600kg steel ingot is lifted by a pair of tongs as shown in figure Q5(b). Determine
the forces exerted at C and E on tong BCE.
(8 marks)
Figure Q5(b)
THE END
EGR2201/EGR2214/EGR203(F)AUGUST13/KRISHNAWATHY S/231013