What is the force of the slide

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)}

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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. http://ci..com/cgAVXfQKm7 "39564;"35777;"9a27

3. A is the acceleration, that is, the speed change of the object under the action of the external force
at this time, the external force on the object is f, and the formula of the external force is f = ma, and M is the mass of the object
when the object is only affected by the gravity g of the earth, the acceleration a is the acceleration g of gravity, that is, to replace a in the above formula with G
and the external force is equal to the gravity, that is, f = g = ma = mg. Therefore, f = mg and g = mg
F = ma can be used for any problem
G = mg is used when an object is subjected to gravity, and its essence is the same as F = ma
F and G are equal in value when an object is subjected to gravity only
when an object is subjected to other forces besides gravity, a is not equal to g

4. It depends on the volume. For example, if a piece of 100 square meters paper weighs 1 kg and hits people, do you think people will die? Of course not!

5. The moving distance of power end is related to the number of load-bearing rope segments - if the number of load-bearing rope segments is n and the weight rises h, then s = NH
the key is to find out the number of load-bearing rope segments
for reference only!

6. The inertia calculated by the mass of slide and the radius of pulley is a positive solution. As for the friction force, the motor and driver can be compensated by choosing a larger one.

7. The fixed pulley does not save labor, and the movable pulley saves labor to 1 / several times of the original force according to the number of strands of the rope around it. Its essence is lever balance, that is, boom × Power = drag ratio times drag. The answer is over. Please accept it.

8. Half the force when there is a moving pulley
the force does not change when there is a static pulley
there is friction only when there is pressure!

9. It depends on what kind of pull you need to calculate.
generally, f = ma
F = UMG
well, there are many more. You can go to the website to see them.
here's a list for you http://www.pep.com.cn

10. Ma, because the acceleration you give is constant. Just like you push one of the fixed pulleys with 100N, your 100N force will not double, OK? I hope I make it clear.