Tikrit University - Electrical Engineering Dept.Seasonal - Examination of MechanicFirst StageDuration: 90 min.Q1: An aircraft has a hook is subject to four forces as shown in next figure. The direction of the 300 Nforce may be varied.a) Determine the direction of the 300 N force that make the resultant of the four forces isdirected horizontally to the right (posative X-axis).b) Determine the magnitude of the resultant.100N3112260N150N300NQ2: Find the centroid of the next shaded area.V= 2.5 mY A3m

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Q2: Find the centroid of the next shaded area. Y=2.5m Y A 3m

International Edition---engineering Mechanics: Statics, 4th Edition

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ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

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Problem 1.12P: A differential equation encountered in the vibration of beams is d4ydx4=2D where x = distance...

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Concept explainers

Center of Gravity and Centroid

The term center of gravity indicates the position or location of a point about which the whole weight of a body or system is supposed to be concentrated, which means the whole weight of the body or system works through this point. It is closely related to mass distribution. For all positions of the body, the center of gravity would be a single point.

Question

Tikrit University - Electrical Engineering Dept.
Seasonal - Examination of Mechanic
First Stage
Duration: 90 min.
Q1: An aircraft has a hook is subject to four forces as shown in next figure. The direction of the 300 N
force may be varied.
a) Determine the direction of the 300 N force that make the resultant of the four forces is
directed horizontally to the right (posative X-axis).
b) Determine the magnitude of the resultant.
100N
31
12
260N
150N
300N
Q2: Find the centroid of the next shaded area.
V= 2.5 m
Y A
3m

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Step 2: Analysis

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Step 3: Calculating The Centroid of Rectangle

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Step 4: Calculating The Centroid of Half Circle

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Step 5: Calculating The Centroid of Right Angled Triangle

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Step 6: Calculating The Centroid of Circle

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Step 7: Calculating The Centroid of Composite Shape in X & Y direction

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