In which direction is the friction experienced while climbing the pole5

Up. The judgment of friction is mainly based on the movement trend of the active force (such as the person here) when it is not moving, and the friction force hinders this movement trend in the opposite direction. When a person climbs the pole, there is a downward trend, so the friction is in the direction of upwards.

Seeing someone say that friction moves you upwards, that's wrong!

How do people move up here, and how does friction come about? First of all, the person needs to hold the rod with his hand, and the friction is generated at the point where the person's hand and the rod come into contact. If the hand is clenched and does not slide, this friction can be regarded as static friction, and if the hand slides, it is dynamic friction (at this time, the friction is less than the gravity of the person).

This friction will only hinder the hand from sliding down, never allowing you to go up. If you want to go up, you have to let go of your hand (don't let go of both), hold it with one hand, lift it up with the other hand, hold it higher so that you will go up!

Frictional force. Up because your gravity is down.

When you climb the pole, you are subjected to two forces in the vertical direction, gravity and friction. Gravity does not need to be said to be downward, since you can go up, it means that the direction of the external force is upward, where do you say the direction of friction is going?

Upward, friction takes you upwards.

Whether you are going up or down at a constant speed, consider the balance of human forces, friction and gravity, and so on.

Friction is a relatively troublesome force in mechanics because it has a lot of content and a wide range in the college entrance examination. Through visual examples, we can understand the method of judging the direction of friction and the calculation of size.

It is subjected to friction, and it is static friction, because there is no relative sliding of the hand, foot and rod and there is a relative tendency of motion, because it is a uniform motion, the friction force is vertically upward and equal to its own gravity.

When they are in relative motion or have a tendency to relative motion, a force is created on the contact surface that hinders the relative motion or tendency to move relative to each other, and the direction of the frictional force is opposite to the direction of the relative motion or tendency of the relative motion of the object.

Sometimes an object is subjected to both drag and friction, such as a car that is in motion by both the resistance of the air and the rolling friction of its tires. Friction sometimes makes an object move, unlike drag.

Subjected to friction, because it is moving at a uniform speed, the frictional force is upward and equal to one's own body weight.

Because the direction of friction is always opposite to the direction of the relative motion of the object or the relative movement trend, when doing the pole climbing exercise, the relative direction of motion is the vertical and straight downward, so the direction of the friction force on the hand when climbing the pole upwards is vertically upward

So the answer is: vertically up

The maximum static friction is related to the positive pressure, so holding the lever can increase the maximum static friction, and whether it is at rest or climbing at a constant speed, the real friction is still equal to the gravity, so that it can be balanced.

The first example says that the friction force of the gripping rod does not change, not that the maximum static friction cannot be increased, but that the friction force does not reach the maximum static friction in the first place, and it is the same whether it is held tightly or not. In fact, after holding the lever tighter, Kobayashi can carry more things on his back. But as long as his weight and what he is carrying remain the same, the friction does not change.

The second example is obviously to examine the factors influencing the maximum static friction. You must ensure that the maximum static friction is greater than the gravitational force before it is possible to have a pole up.

The state of motion of an object depends on the force it is subjected to.

Climbing upwards at a uniform speed, climbing downwards at a uniform speed, and resting on the rod are all equilibrium states, indicating that the object is subjected to a balanced force. That is, the magnitude of the vertical downward gravitational force is equal to the vertical upward frictional force.

Standing still on the rod, in order to prevent it from falling, he holds the vertical rod with more force", here is the static friction in the vertical direction, regardless of the amount of pressure in the horizontal direction.

In order to prevent the friction from sliding down because the friction is too small, the measures that can be taken are to hold the rod or rub the anti-slip powder on the hand", which is: at this time, it is sliding friction, and holding the rod can increase the pressure; Rubbing anti-slip powder on your hands increases the roughness of the contact surface, and both methods increase sliding friction.

1 Static friction is equal to gravity.

2. Increase the maximum static friction.

What does it take to increase friction? - Increased hand-to-hand pressure on the bar (grip strength)! then the static friction increases. The human hand pulls the rod downward, and the reaction force, the friction given by the rod "pulls" the human body upward.

Because the direction of friction is always opposite to the direction of the relative motion of the object or the relative movement trend, when the student is doing pole climbing exercise in the school gymnasium, due to the action of gravity, its relative direction of motion is vertical downward, so the direction of friction on his hand when climbing the pole upwards is vertically upward. Using non-slip powder (or using a towel to dry sweat from your hands to make the contact surface rougher) can prevent sliding

Therefore, fill in separately: vertically upward; with non-slip powder

You have a misunderstanding.

The person climbs up along the vertical pole, and the (static) friction is upward.

For example, a person walks forward normally on flat ground, relying on static friction, and this static friction is forward.

As above, a person climbs up a vertical pole by static friction, which is upward.

When a person climbs up a vertical pole, he has a hand holding the pole, and then there is a tendency to slide downward, so this static friction force is upward.

It's not a slide here. If there is slippage, it is also a downward slide, and the sliding friction at this time is also upward.

Climbing the pole upwards is a downward movement of your feet and feet on the pole first, and you can experience it if you don't believe it.

In addition, this is very similar to a normal human walking, the friction of a normal walking is forward, but the overall movement of the person is also forward, because the foot is pushed backward during normal walking.

High School Physics:

The frictional force is downward.

It can be illustrated from two aspects:

One is balance. People move at a constant speed, and the gravitational and frictional forces they experience are a pair of balancing forces.

The second is the nature of friction. The hand is relatively stationary with the rod, so the frictional force is static friction. The static friction should be opposite to the trend of motion.

Here we should pay attention to how to judge the trend of fortune and fortune, and generally imagine how the object would move if there was no static friction. If there is no friction here, the hand will fall, and the laughing segment will be dissipated upwards with the opposite trend of falling with static friction.

As for the point of application, since friction is a contact force, it is naturally on the contact surface of the hand with the rod.

Yes, the action of force is mutual, the pole is an upward friction force to the person, and the person is a downward friction force to the pole.

When a person climbs a pole, the person is subjected to an upward frictional force. The pole is also subject to friction, and the direction is downward.