How to calculate the supporting force and pulling force

1.

1. Gravity g = mg

(vertically downward, g = 9.8m/s2 ≈ 10m / S2, the action point is at the center of gravity, applicable to the earth surface)

2. Hooke's law f = KX

{along the recovery deformation direction, K: stiffness coefficient (n / M), X: deformation variable (m)}

3. Sliding friction force F = μ FN

{opposite to the relative motion direction of the object, μ： Friction coefficient, FN: positive pressure (n)}

{rrrrrrr}

extended data:

different classification of force

1. According to the nature of force, it can be divided into gravity, universal gravitation, elastic force, friction force, molecular force, electromagnetic force, nuclear force, etc Note that gravity is not equal to gravity under all conditions Gravity does not point to the center of the earth under all conditions. Gravity is a component of the earth's gravitational force on an object, and the other component is a centripetal force. Only on the equator does gravity point to the center of the earth.)

According to the effect of force, it can be divided into tension, tension, pressure, supporting force, power, resistance, centripetal force, restoring force, etc

According to the research object, it can be divided into external force and internal force

According to the action mode of force, it can be divided into non-contact force (such as gravitation, electromagnetic force, etc.) and contact force (such as elastic force, friction force, etc.)

There are four basic interactions (forces): gravitational interaction, electromagnetic interaction, strong interaction and weak interaction

nature of force:

materiality: force is the effect of an object (matter, mass) on an object (matter, mass). When an object is subjected to a force, another object must exert this effect on it. Force cannot exist independently without an object

interactivity (interaction): the interaction between any two objects is always mutual, and the object exerting the force must also be the object under the force. As long as one body exerts a force on another, the stressed body in turn will surely add a force to the exerted body Generating conditions: the force is equal in size (the resultant force is zero, in a state of non directional static motion) or not equal, in the opposite direction, acting on two different objects, and acting on the same straight line. It can be summarized as: foreign body, equivalent, reverse, collinear. A pair of interaction forces must proce and disappear at the same time.)

Vectoriality: force is a vector, which has both magnitude and direction

simultaneity: the force proced and disappeared at the same time

independence: the effect of one force does not affect the effect of another

includes three elements: the size, direction and action point of the force. The accurate expression of the three elements of force by a directed line segment is called the diagram of force. The size is represented by the length of a scaled line segment, the direction is represented by an arrow, the point of action is represented by an arrow or the tail of an arrow, and the straight line along which the direction of a force follows is called the line of action of a force. The diagram of the force is used for the calculation of the force. When the judgment power is large, we must pay attention to the scale of the line segment, because even if one line segment is longer than another line segment, but the scale of the long line segment is also longer, the force represented by the short line segment is not necessarily smaller than that represented by the long line segment

2. The weight only increases the gravitational potential energy, as long as the height change is calculated
two right triangles can be made from two positions AB, and the bottom length of the two triangles can be expressed by height H. the difference between them is 2, and the height h can be solved. Then the oblique side length of the two triangles can be calculated respectively, and the difference is the change of height.

3. Pressure, supporting force and pulling force are all elastic according to the nature of force; Elastic force;. When an object is deformed by an external force, if the external force is removed, the object can return to its original shape; Elasticity & quot;. Its direction is opposite to that of the external force that deforms the object. Because there are many kinds of deformations of objects, the elastic force proced also has various forms
the pressure and supporting force are the elastic force between the objects that contact each other and contract, and the pulling force refers to the elastic force between the objects that stretch
pressure, supporting force and pulling force are all named according to the effect of force.

4. It depends on the definition of computing power
since CPU is only for logic operation, it is better than human brain in this aspect. As long as the algorithm is correct, the answer will not be wrong
the computing power of the brain is mainly fuzzy logic judgment, which can be in many aspects, and any CPU is far lower than the computing power of the brain.

5.

Shaanxi Provincial Health and epidemic prevention station, 3 WAIJIAN East Street, Hepingmen

bus: 5, 27, 25, 20, 30, 41, 221, 410, 500, 521, 601, 606, under Jiandong street

6. The two are different ways of calculation. Doing mathematics is logical thinking. Through brain operation, killing mosquitoes is a kind of nerve reflex, which is the result of long-term exercise of the nervous system. If you keep connecting with math, you can do it very quickly.

7. Nanshaomen is relatively large, which is Xi'an Red Cross hospital
, with orthopedics as the main feature. It is a class III first-class hospital. Lianhu Red Cross Hospital in shangxi'an Lianhu District is a class II first-class general hospital

8. There is a truth that will not change for ten thousand years, that is, the price performance ratio in the back row of the infield is 0. If you don't need money to add backup, you will let them grab the VIP in the front row for you.
if you need money, you will be in the grandstand. Take a telescope. In your photo, the position of the big head in the grandstand is very good. Don't choose the flat bottom row It can't be Ang's 9.30 tour. I'm planning to go, too

9. There is a parking lot of 301 Hospital in the south of the gymnasium. If there is a large parking lot in the South Gate of the gymnasium, vehicles can be parked on both sides of the road every time (which is not usually available). Another North Street, park in Huaxi lemao parking lot, or around Zijin Chang'an District. My house is nearby. That's all I know. I wonder if I can help