MindMap Gallery Chapter 7 Power
This is a mind map about Chapter 7 Force, which introduces the basic concepts, properties, effects and detailed explanations of force, which are very suitable for learning.
Edited at 2025-02-26 15:31:51Rumi: 10 dimensions of spiritual awakening. When you stop looking for yourself, you will find the entire universe because what you are looking for is also looking for you. Anything you do persevere every day can open a door to the depths of your spirit. In silence, I slipped into the secret realm, and I enjoyed everything to observe the magic around me, and didn't make any noise. Why do you like to crawl when you are born with wings? The soul has its own ears and can hear things that the mind cannot understand. Seek inward for the answer to everything, everything in the universe is in you. Lovers do not end up meeting somewhere, and there is no parting in this world. A wound is where light enters your heart.
Chronic heart failure is not just a problem of the speed of heart rate! It is caused by the decrease in myocardial contraction and diastolic function, which leads to insufficient cardiac output, which in turn causes congestion in the pulmonary circulation and congestion in the systemic circulation. From causes, inducement to compensation mechanisms, the pathophysiological processes of heart failure are complex and diverse. By controlling edema, reducing the heart's front and afterload, improving cardiac comfort function, and preventing and treating basic causes, we can effectively respond to this challenge. Only by understanding the mechanisms and clinical manifestations of heart failure and mastering prevention and treatment strategies can we better protect heart health.
Ischemia-reperfusion injury is a phenomenon that cellular function and metabolic disorders and structural damage will worsen after organs or tissues restore blood supply. Its main mechanisms include increased free radical generation, calcium overload, and the role of microvascular and leukocytes. The heart and brain are common damaged organs, manifested as changes in myocardial metabolism and ultrastructural changes, decreased cardiac function, etc. Prevention and control measures include removing free radicals, reducing calcium overload, improving metabolism and controlling reperfusion conditions, such as low sodium, low temperature, low pressure, etc. Understanding these mechanisms can help develop effective treatment options and alleviate ischemic injury.
Rumi: 10 dimensions of spiritual awakening. When you stop looking for yourself, you will find the entire universe because what you are looking for is also looking for you. Anything you do persevere every day can open a door to the depths of your spirit. In silence, I slipped into the secret realm, and I enjoyed everything to observe the magic around me, and didn't make any noise. Why do you like to crawl when you are born with wings? The soul has its own ears and can hear things that the mind cannot understand. Seek inward for the answer to everything, everything in the universe is in you. Lovers do not end up meeting somewhere, and there is no parting in this world. A wound is where light enters your heart.
Chronic heart failure is not just a problem of the speed of heart rate! It is caused by the decrease in myocardial contraction and diastolic function, which leads to insufficient cardiac output, which in turn causes congestion in the pulmonary circulation and congestion in the systemic circulation. From causes, inducement to compensation mechanisms, the pathophysiological processes of heart failure are complex and diverse. By controlling edema, reducing the heart's front and afterload, improving cardiac comfort function, and preventing and treating basic causes, we can effectively respond to this challenge. Only by understanding the mechanisms and clinical manifestations of heart failure and mastering prevention and treatment strategies can we better protect heart health.
Ischemia-reperfusion injury is a phenomenon that cellular function and metabolic disorders and structural damage will worsen after organs or tissues restore blood supply. Its main mechanisms include increased free radical generation, calcium overload, and the role of microvascular and leukocytes. The heart and brain are common damaged organs, manifested as changes in myocardial metabolism and ultrastructural changes, decreased cardiac function, etc. Prevention and control measures include removing free radicals, reducing calcium overload, improving metabolism and controlling reperfusion conditions, such as low sodium, low temperature, low pressure, etc. Understanding these mechanisms can help develop effective treatment options and alleviate ischemic injury.
Chapter 7 Power
7.1 Force (F)
Force is the effect of an object on an object
Three elements of force
size
direction
Point of action
The effect of force
Change the shape of an object
Change the motion state of an object
The forces between objects are mutual, and the force-applied object is also a force-obtained object.
Interaction force
Equal size
In the opposite direction
Acts on the same line
7.2 Description of force
Unit: Newton N
Schematic diagram of force
7.3 Elasticity
Elastic force: The force applied to the object in contact with him when it is subjected to elastic deformation.
Type: thrust, tension, pressure, support, etc.
Three elements
size
Related to the degree of elastic deformation of objects
direction
Point to the direction of restoring deformation (perpendicular to the contact surface)
Point of action
Where the stressed object is deformed
Rope tension: along the direction of the rope
Pressure: Contact surface center
Multiple forces: center of gravity
Spring dynamometer
Principle: Within the elastic limit, the spring elongation is proportional to the tensile force
use
Observe range and index value
Adjust zero in force direction
The elongation direction of the dynamometer is consistent with the force direction
7.4 Gravity (G)
Objects near the ground are subject to force due to the attraction of the earth
Three elements
size
G=mg g=9.8N/Kg
G is proportional to m
Different positions, g values are different
Measure with a spring dynamometer
direction
Vertical downward (approximately pointing to the center of the earth)
Point of action
Center of gravity
Regular uniform object: geometric center
Irregular Objects: Hanging Method (Two Lines)
The center of gravity does not necessarily lie on the object