Mechanics (Resultant)Author: Math ELS Description: Keywords: , , , , , , online teaching
Content: Quiz: 1. If the two forces are equal then their resultant can be obtaines from the formula .............. A) R = F1 %2b F2 B) R²=(F1)²%2b(F2)² C) R = 2F cos (½ α) D) R = 2F cos (α)
2. Two perpendicular forces of magnitudes 3N and 4N, then the magnitude of their resultant is .............. N A) 5 B) 5√2 C) 5√3 D) 7
3. Two forces of magnitudes 5 gm.wt and 10 gm.wt , include an angle of measure 120° then the magnitude of their resultant is ..............gm.wt A) 5 B) 10 C) 5√3 D) 5√2
4. Two forces of magnitudes 5N and 10N, include an angle of measure 120° then the angle between the resultant and the first force is .............. A) 45° B) 90° C) 30° D) 0°
5. Two forces their maximum resultant is 25 N, and their minimum resultant is 15 N, then the magnitdes of the forces are ............... A) 20 N and 5 N B) 10 N and 15 N C) 15 N and 15 N D) 12.5 N and 12.5 N
6. If the two intersecting forces are perpendicular, then their resultant is given by the rule: .................. A) R = F1 %2b F2 B) R = 2 F1 F2 cos (½ α) C) R² = F1² %2b F2² D) R² = F1² %2b F2² %2b 2 F1 F2
7. If the resultant of two forces is R where R∈ [ 7 , 13 ], then the magnitudes of the two forces are ................ N A) 7 and 13 B) 6 and 20 C) 7 and 20 D) 10 and 3
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