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Engineering Mechanics: System of Coplanar Forces
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Engineering Mechanics: System of Coplanar Forces
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25 Questions

1. For a vector F, Fcosβ is equal to zero. What does this refer?
2. Every point on the force vector is having the same magnitude and the same direction as the whole force vector have.
3. Which is true for two vector A = A1i + A2j + A3k and B = B1i + B2j + B3k?
4. If A is any vector with Ai + Bj + Ck then what is the y-axis component of the vector?
5. What does the moment of the force measure?
6. We can add the force vectors directly. But with dividing each by it’s magnitude first.
7. Which of the following statement is true?
8. If two equal vector forces are mutually perpendicular then the resultant force is acting at which angle as compared to one of the vectors?
9. What is cosα for force vector F = Ax + By +Cz (Given α, β and γ are the angles made by the vector with x, y and z axis respectively)?
10. Which is true?
11. Which statement is correct about the vector F?
12. For two vectors defined by an arrow with a head and a tail. The length of each vector and the angle between them represents:
13. The moment axis is in the direction perpendicular to the plane of the force and the distance.
14. The resultant force acting in the couple is _________
15. What is the sum of squares of the cosine angles made by the force vector with the coordinate axis?
16. What is the value of {(AxB).(C.D)x(AxB).(C.D)}? For the four vectors A, B, C and D, with A, B, C and D all lying in the same plane?
17. What is {(i.i) + (-i.j) + (-k.k) + (k.i)}.(Ai +Bj + Cz)?
18. A man is travelling in the car. He is driving the car. If he is taking a turn in the road. He is applying force to the steering wheel by holding the wheel with his both hands. The steering wheel is facing a moment of force.
19. The tendency of rotation of the body along any axis is also called ___________
20. Which statement is right?
21. All the vectors quantities obey:
22. A couple moment is a _______ vector.
23. Which of the following is correct for the moment of couple M caused by two forces of same magnitude F and are separated by a distance of r?
24. What is k.i?
25. If the forces acting on the couple are in the same direction, that is they are not in the opposite direction as always they are, then?

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