Indian Institute of Technology Madras (IIT-M) 2007 B.Tech AM110-Engineering Mechanics,Quiz 1 - Question Paper
AM110-Engineering Mechanics,Quiz 1
Date:14th September 2007
Time :8:00 - 8:50
Instructions:
1)Answer all ques.
2)State clearly all the assumption and conventions used while answering your ques..
AM 110 Engineering Mechanics Quiz I
Time: 0800 - 0850 hrs.
Date: 14lh September 2007 Instructions:
1. Answer all questions.
2. State clearly all the assumptions and conventions used while answering your questions.
3. Wish you all the best.
1. The following five sub-questions have only ONE right answer. Choose the right answer and indicate the same in your answer book. (5x1 = 5)
(i) Which of the following statements is NOT a correct statement, with reference to a rigid body?
A) A system can always be replaced by an equivalent single force and an equivalent single moment.
B) The moment of a force is the sum of the moments of its components
C) Real work can always be done in structures that are assembled with rigid bodies.
D) A force may act at any point along its line of action without changing its effects on the rigid body.
(ii) The beam and the cable (with a frictionless pulley at D) support a 100 kg load at C as shown in Figure 1. For equilibrium, the tension in the cable must be
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Figure 1 |
(A) Cannot be determined from static
equilibrium
(B) 125 kg
(C) 91.7 kg
(D) 105.8 kg
(iii) Figure 2 is a sketch of a retaining wall structure used as an earth embankment. The vertical wall ABC and the bottom floor DCA act as a single unit. The earth that is retained has a density of y and the earth pressure exerted by the earth has a linear variation from zero at the top to yh at the bottom. The maximum height h of earth that the wall can retain without overturning about A, is given by
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e |
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(A)/6x(L + 0.5x) (B)%/4x(L + 0.5x)
(C) j6x(L + x) (D)3x(L + 0.5x)
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Attachment: |
| Earning: Approval pending. |
