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Engineering Mechanics Practice Test: Centre of Gravity and Centroid
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Engineering Mechanics Practice Test: Centre of Gravity and Centroid
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25 Questions

1. What is not the condition for the equilibrium in calculations involved in the determination of the centre of mass?
2. The total of all the masses of small particles adds up to give the total body mass. This mass lies along with gravity gives a force vector which is being passed by ________
3. Centroid determination involves the calculations of various forces. In that forces are having various properties. That is force is developed by a support that not allows the ________ of its attached member.
4. Volume is best given by ___________
5. The all small masses that are being applied by all the infinite particles of the body act __________ to each other.
6. If solving the question in 3D calculations is difficult, then use the 2D system and then equate the ratio of the product of the centroid of the section to its mass to the total mass of the body to the centre of mass.
7. One of the uses of the centroid is as in the simplification of the loading system the net force acts at the ___________ of the loading body.
8. What is not the condition for the equilibrium for the calculations used for the determination of the centroid in three dimensional system of axis?
9. Mass is best given by _______
10. Centroid of a body does depends upon the small weights of tiny particles. Which statement is right for force acting by the small particles of the body having it’s vector form as = Ai + Bj + Ck?
11. The all small weights that are being applied by all the infinite particles of the body act __________ to each other.
12. We use sometimes the measures to know the direction of moment. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?
13. If A is any vector with Ai + Bj + Ck then what is the y-axis component of the vector if we are using the vector math to calculate the centre of gravity?
14. Density is best given by _______
15. Which statement is right for force acting by the small particles of the body having it’s vector form as = Ai + Bj + Ck?
16. The total of all the weights of small particles adds up to give the total body weight. This weight is the force vector which is being passed by ________
17. Determine the x coordinate of centroid of the wire in the shape of circle as shown.
Find the x coordinate of centroid of the wire in the shape of circle as shown
18. The centre of gravity is the ratio of ________ to _________
19. The centre of ____________ is the ratio of the product of centroid and volume to the total volume.
20. A body’s all small particles have a small mass which is being applied by them to the body, which adds up to the total mass of the body.
21. A body is consisted of __________ number of particles.
22. The body is sometimes acted by two or three force members. The difference between the two and the three force members is ________________
23. If solving the question in 3D calculations is difficult, then use the 2D system and then equate the ratio of the product of the centroid of the section to its mass to the total mass of the body to the centroid.
24. If the force vector F acting along the centre of gravity is having its x-axis component being equal to Z N, y-axis component be X N and z-axis component be Y N then vector F is best represented by?
25. We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?

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