Among the following four pairs of forces, a2n.11n b.3n.9n c.5n.7n d.7n.13n is impossible to be 8N

The value range of resultant force is the absolute value of the difference between (including) two forces the sum of two forces
So it's a

What is the maximum resultant force and the minimum resultant force of the three common forces 4N, 6N and 7n?

The direction of the maximum resultant force is the same, acting on a point, 4 + 6 + 7 = 17N, the minimum force is 0, as long as three forces can form a triangle

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1. It is known that F1 = 6N F2 = 7n F3 when a body moves in a straight line with uniform velocity under the action of three different directions of common point forces =8N, what are the three resultant forces? What are the magnitude of the two resultant forces F1 and F2 in the N direction?
2. 15. B as shown in the figure, if the magnitude of the three common point forces is F1 = 5N, F2 = 10N, F3 = 15N and θ = 37 ° respectively, the resultant force FX in the X direction=_______ N. On the Y side
3. The resultant force of F1 and F2 is F. if the angle between the two forces remains unchanged, when will the resultant force remain unchanged when F1 becomes larger
4. Two mutually perpendicular common point forces F1 and F2 act on the same object and make the object move for a period of displacement. If F1 does 4J work on the object, F2 does 5J work on the object How much work do they work together? Write down the reasons
5. When two forces are in the same direction, the resultant force is a, and when the two forces are in the opposite direction, the resultant force is B. when the two forces are vertical, the resultant force is? Write down every step as long as you know why
6. When the two forces are in the same direction, the resultant force is a; when the two forces are in the opposite direction, the resultant force is B. when the two forces are perpendicular to each other, what is the resultant force?
7. Three forces act on an object with a mass of 2kg at the same time, where F1 = 3N, F2 = 4N, F3 = 2n. The directions of F1 and F2 are always vertical, and the direction of F3 can be changed at will, then the acceleration of the object may be () A. 4m/s2B. 3m/s2C. 2m/s2D. 1m/s2
8. Two components F1 = 3N and F2 = 4N are known. The angle between the two components is 90 degrees. Find the resultant force of the two forces
9. There are two equal forces F1 and 2. When the angle between them is 90 degrees, the resultant force is F. when the angle between them is 60 degrees, the resultant force is f_ RT, I figured it out to be 1.5f1 ^ 2 The answer is (√ 6 / 2) F
10. 10. A has three common point forces F1 = 2n, F2 = 4N, F3 = 4N, forming an angle of 120 ° with each other, and the resultant force is__________ N. The direction is_____ .
11. An object is affected by a common point F1. F2. F3. It is known that F1 = 6N, F2 = 7n, F3
12. =When the mass m = 5kg is placed on a smooth horizontal plane, what is the acceleration of the object when the horizontal force F 1 = 6N acts on the object When an object with a mass of 5kg is placed on a smooth horizontal plane, what is the acceleration of the object when the horizontal force F1 = 6N acts on the object? If another horizontal force F = 8N is applied and F1 and F2 are in the same horizontal plane, F1 is perpendicular to F2. What is the acceleration of the object?
13. What is the maximum acceleration and minimum acceleration of a 1kg object under the action of three forces of 2n, 4N and 5N?
14. The acceleration of an object with a mass of 1kg may be () A. 5 m/s2B. 7 m/s2C. 8 m/s2D. 9 m/s2
15. If three forces of 4N, 7n and 9N act on one object, then () A. The maximum resultant force of the object is 20nb. The minimum resultant force of the three forces is 2nc. The minimum resultant force of the three forces is zero. D. the resultant force of the three forces may be 5N
16. An object is in equilibrium under the action of many common point forces, such as 5N, 7n, 9N, 12n, 20n, etc. now the 9N force is reversed for balance How much force and direction should be added?
17. The resultant force range of 6N and 9N
18. If the existing three forces are 4N, 6N and 9N respectively, what is the maximum resultant force and the minimum resultant force
19. Three coplanar forces in different directions at the same level are applied to a 2kg body for uniform straight motion. We know that F 1 = 6N, F 2 = 7n, F 3 = 8N, F 1 and F 2, and the force F 1, the body plus a Three coplanar forces in different directions and at the same level are used to make a uniform straight motion on a 2kg body. If we know that F1 = 6N F2 = 7n F3 = 8N F1 and F2 and the force? F1, how much is the body plus a
20. F1 = 6N, F2 = 8N, find the range of F3 force and the resultant force of F2 and F3