12.3 CHAPTER 12. FORCE,MOMENTUM AND IMPULSE
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F
W
- The point Q is in equilibrium due to threeforces F 1 , F 2 and F 3 acting on it. Which ofthe
statements about these forces is INCORRECT?
(a) The sum of the forces F 1 , F 2 and F 3 is zero.
(b) The three forces alllie in the same plane.
(c) The resultant force of F 1 and F 3 is F 2.
(d) The sum of the components of the forces inany direction is zero.
F 2
F 1
Q
F 3
- A point is acted on by two forces in equilibrium. The forces
A have equal magnitudes and directions.
B have equal magnitudes but opposite directions.
C act perpendicular to each other.
D act in the same direction.
- A point in equilibrium is acted on by threeforces. Force F 1 has components 15 N due south
and 13 N due west. What are the components of force F 2?
N
W
S
E
20 N
F 2
F 1
A 13 N due north and 20 due west
