GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
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Subject Code:2160308 Date:30/11/2018Subject Name:Biomechanics
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
MARKS
Q.1 (a) State Newton’s Laws of Motion. 03
(b) For F1 = 40N and F> = 30N, where angle with X-axis are 01-0° and 04
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02 = 90° respectively. Find Resultant force F.Fi F>
(c) Explain different types of force systems. 07
Q.2 (a) Explain Free Body Diagram. 03
(b) Derive Hagen-poiseuille equation for pressure difference AP. 04
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(c) Explain Spirometry in detail. 07OR
(c) Explain mechanism of air flow and respiratory cycle. 07
Q.3 (a) Define following terms: 03
(1) Flexion, (2) Abduction, (3) Anterior
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(b) List different types of skeletal joints. 04(c) For a person doing weight lifting using/dumbbell, consider weight of 07
forearm 20N and CG at 15cm from elbow joint, weight of dumbbell
is 100N and is held in palm at 45cm. (1) Find moment at elbow for
straight hand (vertical) and 90° flexion. (2) At 90° flexion what will
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be the force applied by biceps,on forearm? Assume muscles are joinedat 2cm from elbow joint and perpendicular to forearm.
OR
Q.3 (a) Explain composition-of bone. 03
(b) Explain Hinge joint in detail. 04
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(c) For a person wearing weight boot in a seating position and doing 07lower leg flexion/extension exercise: consider weight of lower leg is
50N and weight of boot is 100N. From knee joint CG at 20cm and
weight boot at 50 CM.
Find moment at knee joint when lower leg is
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(1) extended horizontally, (2) at 30° and (3) at 90°.Q.4 (a) Explain Laminar Flow. 03
(b) Compare biological and mechanical Heart valves. 04
(c) Draw structure and briefly describe characteristics and mechanical 07
property of tendons and ligament.
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ORQ4 (a) Explain Turbulent Flow. 03
(b) What are soft and hard tissues? List types of both. 04
(c) Draw neat diagram of and explain following: 07
(1) Cage and Ball valve and (2) Bi-leaflet valve.
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Q.5 (a) Explain fixation of implants. 03
(b) Explain role of biomaterials. 04
(c) Explain human gait cycle in detail. 07
OR
Q.5 (a) Define Biocompatibility and explain its importance. 03
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(b) Explain artificial Hip joint and discuss its specifications. 04(c) Explain characteristics of different metals as biomaterial. 07
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