What forces produce moments
Any force not acting on the shaft can produce a moment
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- 1. Analysis of torque difficulties: what is the difference between force and torque?
- 2. (4 and 3 / 2) - (0.5-3 and 1 / 2)?
- 3. How to calculate (1 + 2 / 1 + 3 / 1 + 4 / 1) * (2 / 1 + 3 / 1 + 4 / 1) - (1 + 2 / 1 + 3 / 1 + 4 / 1 + 5 / 1) * (2 / 1 + 3 / 1 + 4 / 1)
- 4. How to calculate 3.6 △ 0.4-1.2 × 5 easily?
- 5. Simple calculation of (+ 1 and 1 / 4) - (+ 5) + (- 1 / 3) + (- 5 and 2 / 3)
- 6. How about 1 / 3 + 2 / 5-2 / 3 + 1 / 2
- 7. Given. Z = (| Z | - 1) + 5I, find the complex Z
- 8. How to calculate the friction moment of rotating shaft? There is mutual pressure between two rotating surfaces, resulting in friction torque. How to calculate this friction torque?
- 9. The calculation of the moment of gear rotation When the cylindrical spur gear rotates, the pitch diameter of the driven wheel d = 30cm, the meshing force F of the driving wheel f = 1kn, the pressure angle a = 20 ° and the transmission moment M. F of the meshing force F to the center of the driven wheel M. f has been solved M. f = M. F1 + M. F2, M. F1 passing through the moment center = 0, then M. f = M. F2 = 1 / 2fcosa = 141n. M, when is this 1 / 2fcosa, and how is this 141 obtained
- 10. Is it necessary to calculate the moment fulcrum without rotation?
- 11. Is torque balance sufficient for force balance
- 12. Let's talk about the relationship between force balance and moment balance in detail. For example, is the moment balanced in case of force imbalance? Is the force balanced in case of moment imbalance? Give an example~
- 13. Let two forces F1 = 2I + 3j + 6K and F2 = 2I + 4J + 2K act on point m (1, - 2,3), and point n (P, Q, 19) is on the action line of the resultant force P = 9q = 12 please give me a message
- 14. The displacement of a particle under the action of several forces is △ r = 4i-5j + 6K, and one of the forces is f = - 3i-4j + 5K. The work done by this force in the displacement is calculated
- 15. If the displacement of a particle under several forces is △ r = 5J + 6J + 7K (m), and one of the forces is a constant force F = 2I + 3j-4k (n), the work done in the process of displacement is A8J B0J C56J D10J
- 16. Solving (- 3 + 2I) - (4-5i)
- 17. What is the result of simplifying (2 + 3I) (3 + 2I) I (I is an imaginary number)?
- 18. -How to simplify 1-2i
- 19. Simplify I (2i-1) = () A. -2+iB. 2+iC. -2+iD. -2-i
- 20. Simplification of a complex number problem (2-I) ^ 10 / (1-2i) ^ 8=