When a person is going down stairs, which is more forced, the front foot or the back foot?

Of course, the front foot is more forced, because when stepping on, the front foot is more forceful, and the back foot is relatively relaxed.

When going down the stairs, the front feet are more forced, because when people go down the stairs, the front feet have to bear more downward impulse, so the pressure is greater.

If a person is going downstairs, of course the back foot will be more subjected to gravity, because the front foot may be in front of the stairs and he will be suspended.

When people go down the stairs, the impact force on the front foot and the back foot is relatively large, and the force on the back foot is relatively large before the front foot hits the ground. After the front foot hits the ground, the impact force on the front foot is relatively large.

When you go down the stairs, which is more stressful, the front foot or the back foot? I think when people go downstairs, I think it's the front foot, the front foot is not forced, and the back foot is very forced.

Now when you go down the stairs, you must be stressed on the arch of the front foot, because every time you take the first step, it is actually more forced.

Hello friend, when I go down the stairs, the front foot should be more stressed than the back foot, because gravity is on the front foot.

Normally, people will push harder on their front feet when they go down stairs, because usually when you're struggling or trying to balance. The front heel is better used to maintain the balance of the body.

Which is more stressful on the front foot or the back foot when going up stairs? When going down the stairs, of course, the force on the visible foot is greater, and the weight chosen by the human body leads to the front foot to press down.

When going down the stairs, which person is more stressed by the front foot? Of course, when the front foot is going down the stairs, which person is more stressed by the front foot? The front foot, of course.

When a person goes down the stairs, his front feet are more forced, because it is the front feet that exert more force even when leaning forward.

Now when I go downstairs, which is the thinner front foot or the back foot, I am stressed because of the front heel, because the back foot is heeled. Target. Now when I go downstairs, which is the thinner front foot or the back foot, I am stressed because of the front heel, because the back foot is heeled. So the front foot gains, and the back foot is not forced.

My personal feeling is that the front foot is more forced, because it is going downstairs, our bodies are leaning forward, all pressing on the front foot, and the back foot is just a follower.

When going down stairs, the front foot is more stressed than the back foot.

When going down stairs, which is more forced, the front foot or the back foot, I think of course the back heel is the heel.

The forefoot is more forceful, you can now go downstairs and try it, feel it clearly.

When doing these exercises, both of our feet will be subjected to force, but the amount of force is different. Because there are a lot of forces, all the forces we experience are basically there.

If you run and squat when going down the stairs, of course, both feet must be stressed at the same time, otherwise, it is very dangerous to fall down if you are unbalanced.

Yes, this kind of activity has the greatest impact on the feet, and the same is true for the knees, which will feel knee pain, so it is best to reduce the intensity of such activities.

I think that when going down stairs, running, and squatting, the main force is on the ankle and knee joints, and of course the soles of the feet are also accepted, but the most stress is on the bend of the joints. In that case, every time you bend the joints and ankles, you will be subjected to a lot of force.

When going down stairs and running and squatting, whether both feet are more forced, when going down stairs, the feet are more forced, and when running and squatting, the feet are less forced.

Yes, when people go up stairs and run and squat, both feet should be more forced, because the pressure on the feet is relatively large at this time.

No. Generally, the lower leg area is more stressed. The force on the feet and upper body is relatively equal.

When people go down stairs and run and squat, do they put more force on their feet? Yes, there is no problem with what you said.

The center of gravity should be leaning towards the upper body, rather than the front and back feet. If you go downstairs and want to fall, it's definitely not the foot first. It's the upper body.

Now consider a situation where both feet are on the ground at the same time, not a situation where one foot is still in the air. It's the moment when both feet are on the ground and the back feet are ready to step forward.

When a person walks, he has one foot in front and one foot behind.

Push your back foot hard to move your body forward, and you will be rubbed forward.

The front foot is supported, and the ground obstructs the forward, which is subjected to friction and backwards.

This is the same as the friction between the front and rear wheels of the bicycle.

In the section of Physics Compulsory 1, Interaction and Friction, on the judgment of the direction of static friction, an introduction to the method of stepping on the watermelon peel

Hind feet: If your body wants to move forward, your hind feet must be pushed backwards in order to make the body forward, that is to say, the hind feet have a tendency to move backwards relative to the ground, so the friction on the feet is forward. When running, he is also a bridge-like Zheng Ju.

As for the front foot, I can't shout at Frank to give you a definite answer.

When walking, the front foot rubs forward and the back foot back.

Physics questions look at human motion as a whole, and you won't have the questions you ask. When solving the problem, you should think that the friction of the ground to the sole of the shoe is always facing forward!

Considering that you may be a good thinker, I'll be a nerdy with you for a while :

In fact, the moment the front foot just hits the ground, the friction force is backward when the leg has not yet started to move backwards because the leg is supported forward on the ground. You remember walking on slippery ground (when there is no friction), the front foot always slides forward (the ground fails to provide backward friction to the shoe).

And the back foot always slides backwards. ）

In the section of Physics Compulsory 1, Interaction and Friction, on the judgment of the direction of static friction, an introduction to the method of stepping on the watermelon peel

Going downstairs or going upstairs, which is more unfriendly to our knees?

Do you know that going up and down stairs in daily life is not good for your knees?

When a person goes up and down stairs, the body is subjected to force from standing with both feet to one foot. The knee, as the connecting part of the thigh and calf, is subjected to the pressure of the center of gravity. However, there are only meniscus, cruciate ligaments and other tissues around the knee joint, and there are not too many muscles to protect the stability of the joint, so it will naturally damage the knee.

And the knee joint is the least fond of "weight-bearing" exercises. Although climbing stairs can effectively enhance cardiopulmonary function, and can burn calories, it plays a leading role. But there are two sides to many things, and so is stair climbing.

When a person goes up and down stairs, the body goes from the pressure on both feet to 1 foot pressure when standing. The knee, as the connecting part of the thigh and calf, should bear the pressure of the center of gravity. However, there are only tissues such as meniscus and cruciate ligaments around the knee joint, and there are not many muscles to protect the stability of the joint, so it is natural to damage the knee joint.

Perhaps everyone knows the concept of a knee injury while climbing stairs.

Often when going up stairs, the force on the knee joint is more than three times the body weight, and when going down the stairs, it needs to bear 6-7 times the pressure, so for people who often go up and down the stairs, it is extremely easy to put pressure on the joints, and it will cause pain after a long time.

According to the survey, when going up stairs, the knee joint bears double the weight, and when going downstairs, it bears twice the weight. When we go up the stairs, our feet are stepped forward, and after stepping on them, we move the center of gravity to the front feet, and the stress time is relatively short compared to the knees of the front feet. When descending stairs, when the front foot is off the ground and stretches forward, the knee of the back foot will be put under pressure, until the impact on the knee will be greater when the front foot falls.

In the field of sports, once you choose to climb the stairs to exercise, in order to minimize the damage to the knees, then the posture requirements are more stringent. The fitness instructor will ask you to keep your back straight when you go up the stairs and not to move your weight forward too early to reduce the pressure on your knee joint.

Through the above description, you should understand which is better for your knees to go up and down the stairs.

Going downstairs will be a little bigger, because the pressure on us upstairs is on the thighs, and downstairs our knees have to bear the weight of the body x 2 times, so the knees have a relatively large bearing capacity, of course, our knee joints have the patella and synovial sac in it, so it will not be painful.

Going downstairs was even less friendly to our knees as when we went downstairs. The knees will work extra hard. So in the long run, it will hurt our knees.

It was going upstairs that hurt our knees more. At this time, the knee is more vigorous, so the knee wear is greater, and it becomes worse and worse.

Go upstairs, because it takes more effort to go upstairs and requires more on the knees, which will seriously affect our knees.

Going downstairs is more likely to be unfriendly to your knees. When a person descends a staircase, the body is stressed by one foot instead of standing with both feet, and the knees, as the connecting part of the thighs and calves, are subjected to the pressure of the center of gravity. When descending stairs, when the foot is stretched forward off the ground, the knee of the back foot will put pressure on the front foot until the front foot hits the ground.

The faster the inertia speed is when going downstairs, the greater the impact on the knees. When going up the stairs, our feet are stepped forward, and after stepping on them, the center of gravity is shifted to the front foot, which is relatively short compared to the knee of the front foot.

The friction on the hind foot is forward, and the friction on the front foot is backward.

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Answer B Analysis: In the process of walking, because the foot and the ground do not slide relative but have a relative movement trend, they are subject to static friction The front foot has a forward movement trend type The friction is backward, and the rear foot has a backward movement trend The friction is forward, so B is selected

Comments: The direction of the friction force of the static friction wheel is opposite to the direction of the relative motion trend, and we often use the hypothetical method to judge the direction of the static friction Assuming that the contact surface between two objects is smooth, and the direction of movement of the relative contact surface of the object is judged, the direction of the motion direction of the relative motion trend of the object is the direction of the relative motion trend of the object, then the direction of the static friction force experienced by the object is opposite to the direction of the relative motion trend of the object