Q:Physics high school. Why does a spring fall to the lowest point and the acceleration a must be greater than the acceleration of gravity g ah. Seek expert

According to the conservation of mechanical energy, the object should be a free fall motion at the upper end of the spring

Q:How about the size of the elasticity?

Spring elastic deformation, the elastic limit, the elastic force with the elongation of the spring (or shorten) is proportional to the length (or the length of the spring and the pulling force is proportional to F=-kx (), or delta F=-k delta x). Where k is called the coefficient of stiffness (as a coefficient of rigidity or elasticity) of a spring, in numerical terms equal to the elasticity of a spring when it is stretched (or shortened) in unit length. The unit is Newton per meter, and the symbol is N/m. The K value is related to the nature of the material. The difference between the stiffness and stiffness of springs is that they have different stiffness coefficients. Moreover, the stiffness coefficients of different springs are generally different. The expression in the sign spring caused by its elongation (or compression) in the opposite direction. The law was discovered by British scientist Hooke, known as Hooke's law.

Q:Want to practice how to use pectoral muscle spring expander

Spring expander ah, ha ha this thing is very kindI bought the first exercise equipment is it, when the first day of buying (already pulled out)Let me answer your question1, at least every day to pull more than 200, you can divide into 10 groups, a group of 202 do you have a box for packing when you buy it? It should be illustrated. I bought it before. AMan to show you how to use the most simple method, is placed in the chest, chest behindPull behind the sideways pull, a head in the sole of the foot drop, he slowly realize it3, how long do you need to do this? It depends on how big you areIf you insist on the basic 200 tomorrow, it will be effective in less than a monthGo ahead and hope my answer will help you

Q:What is spring pressure and height?

Press the compression spring to the point where each circle is tight. Press it and press it high

Q:What is an independent bagged spring?

Spring independent design, independent bagged spring spring individual under pressure, do not affect each other, so that neighbors are undisturbed sleep, silent sleep and enjoy the quiet, at the same time can effectively prevent spring between the friction, prolong the service life. Its fabric is soft and comfortable, and it can be perfectly integrated with the human body curve no matter what sleeping position.

Q:What kind of spring has the best performance?

Number of coils, coil number is greater than the difference between the 0.25 circle, will directly affect the intensity of emotion.

Q:Stainless steel and spring steel hardness, who is hard?

To sell the spring steel where seen relatively hard two pliers are very difficult to open

Q:Buffer spring buffer for automobile

The automobile spring buffer adopts the cushion principle to reduce the vibration produced by the vehicle during the running, and increase the comfort of the car. When the vehicle is equipped with a spring buffer, the problem of the spring of the shock absorber is effectively solved, the performance of the shock absorber is recovered, and the shock absorber and the suspension system are also protected, and the oil seal of the damping core is avoided. As long as the quality is good and the car to pick their own spring buffer models, can save at least 3 sets of shock absorber overhead, and a shock absorber to several hundred dollars or a thousand dollars, the long term of the owner is indeed a big burden. The new car spring buffer is a buffer of urethane material, not only simple and easy installation, no looseness of vehicle any screws, can make the body up 3 5cm, recovery of the original body height, improve the stability of road safety through deceleration and brake, greatly reduce the fatigue feeling after. The car cushion on the market are made of urethane material, suggest that you choose the buffer glue to the regular manufacturers purchase, on the market there are many inferior or three villages are often unable to get some of the results, some even hurt the shock absorber, shorten the service life of the damping rubber. My friend used Jinke rubber buffer for years should be full, very good quality.

Q:Cold rolled coil spring spring and difference "

Coil is to burn the red, generally large diameter to coil

Q:What's the spring material to?

65Mn, 55Si2Mn, 60Si2Mn, 50CrVA, 75, 85, 55CrMnA, 60Si2CrVA, 60Si2MnA, 70, 65, 50CrMo, 55SiMnMoVNb, 60SiMnMoA, 65Si2MnWA, 70Si3MnA, and so on