1. Copyright © 2010 Pearson Education South Asia Pte Ltd
QUIZ (Chapter 2)
1. Which one of the following is a scalar quantity?
A) Force B) Position C) Mass D) Velocity
2. For vector addition, you have to use ______ law.
A) Newton’s Second
B) the arithmetic
C) Pascal’s
D) the parallelogram
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2. Copyright © 2010 Pearson Education South Asia Pte Ltd
QUIZ
3. Resolve F along x and y axes and write it in vector form. F = { ___________ } N
A) 80 cos (30°) i – 80 sin (30°) j
B) 80 sin (30°) i cos (30°) j
C) 80 sin (30°) i – 80 cos (30°) j
D) 80 cos (30°) i sin (30°) j
4. Determine the magnitude of the resultant (F1 + F2) force in N when F1={ 10i + 20j }N and F2={ 20i + 20j } N .
A) 30 N B) 40 N C) 50 N
D) 60 N E) 70 N
30° x y
F = 80 N
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QUIZ
5. Vector algebra, as we are going to use it, is based on a ___________ coordinate system.
A) Euclidean B) Left-handed
C) Greek D) Right-handed E) Egyptian
6. The symbols , , and  designate the __________ of a 3-D Cartesian vector.
A) Unit vectors B) Coordinate direction angles
C) Greek societies D) X, Y and Z components
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4. Copyright © 2010 Pearson Education South Asia Pte Ltd
QUIZ
7. If F = {10 i + 10 j + 10 k} N and
G = {20 i + 20 j + 20 k } N, then F + G = { ____ } N
A) 10 i + 10 j + 10 k
B) 30 i + 20 j + 30 k
C) – 10 i – 10 j – 10 k
D) 30 i + 30 j + 30 k
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5. Copyright © 2010 Pearson Education South Asia Pte Ltd
QUIZ
8. A position vector, rPQ, is obtained by
A) Coordinates of Q minus coordinates of P
B) Coordinates of P minus coordinates of Q
C) Coordinates of Q minus coordinates of the origin
Coordinates of the origin minus coordinates of P
9. P and Q are two points in a 3-D space. How are the position vectors rPQ and rQP related?
A) rPQ = rQP B) rPQ = - rQP
C) rPQ = 1/rQP D) rPQ = 2 rQP
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6. Copyright © 2010 Pearson Education South Asia Pte Ltd
QUIZ
10. Two points in 3 – D space have coordinates of P (1, 2, 3) and Q (4, 5, 6) meters. The position vector rQP is given by
A) {3 i j k} m
B) {– 3 i – 3 j – 3 k} m
C) {5 i j k} m
D) {– 3 i j k} m
E) {4 i j k} m
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7. QUIZ (Chapter 4)
1. What is the moment of the 12 N force about point A (MA)?
A) 3 N·m B) 36 N·m C) 12 N·m
D) (12/3) N·m E) 7 N·m
2. The moment of force F about point O is defined as MO = ___________ .
A) r x F B) F x r
C) r • F D) r * F
• A
d = 3 m
F = 12 N
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8. QUIZ
3. If a force of magnitude F can be applied in 4 different 2-D configurations (P,Q,R, & S), select the cases resulting in the maximum and minimum torque values on the nut. (Max, Min).
A) (Q, P) B) (R, S)
C) (P, R) D) (Q, S)
4. If M = r  F, then what will be the value of M • r ?
0 B) 1
C) r2F D) None of the above.
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9. QUIZ
5. Using the CounterClockWise direction as positive, the net moment of the two forces about point P is
A) 10 N ·m B) 20 N ·m C) N ·m
D) 40 N ·m E) N ·m
6. If r = { 5 j } m and F = { 10 k } N, the moment
r x F equals { _______ } N·m.
A) 50 i B) 50 j C) –50 i
D) – 50 j E) 0
10 N
3 m P m
5 N
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