1. Select the system that is equivalent to J. A) K B) L C) M D) N READING QUIZ (L) F Fd o F p d o F (J) Fd o F (K) Fd o (M) p o (N)

2. ATTENTION QUIZ Which one of the following systems is equivalent to J ? A) K B) L C) M D) N o 50 N.m p 10 N (J) o 5 m p 10 N (K) p 5 m o 10 N (L) 10 N o 5 m p (N) 10 N 5 m p o (M)

3. CONCEPT QUIZ For the force system shown, select the equivalent force-couple system positioned at point O. A)F R0 = {10 i + 30 j }N M R0 = 90 k N  m B)F R = {10 i + 30 j }N M R = – 30 k N  m C)F R = {– 10 i – 30 j } N M R = 30 k N  m D)F R = {10 i + 30 j } N M R = 30 k N  m x y O 2 m 3 m 10 N 30 N

4. CONCEPT QUIZ Replace the force-couple system shown by a single force on the y-axis. Select the y-coordinate of the point of application of this force. A)8 m B)10 m C)– 8 m D)– 10 m 4 3 F = 10 N x y M = 80 N  m O

5. ATTENTION QUIZ For the force system shown in the figure, determine an equivalent force couple system at O. A)F R = – 100 k lb M R = {1200 i + 600 j } in  lb B)F R = 100 k lb M R = {1200 i + 800 j } in  lb C)F R = – 100 k lb M R = { – 1200 i – 600 j } in  lb D)F R = – 100 k lb M R = {– 1200 i + 600 j } in  lb z y 100 lb x 16” O 8” 12” 6”

6. ATTENTION QUIZ For the force system shown, determine the x-y coordinates of the point of application of a single equivalent resultant force on the slab. A)(6, 12) in B)(0, 12) in C)(6, 0) in D)(0, 6) in y x z 50 lb 100 lb 16” 6” 8”

7. CONCEPT QUIZ For the force system shown, determine the x-y coordinates of the point of application for a single equivalent resultant force on the slab. A)(1, 2) in B)(2, 1) in C)(4, 2) in D)(2, 4) in z 100 lb x y 4” 100 lb 2”