Impulse impact force? What is impulse called?

About impact.

We all know that the function of the rope is that the climber can brake the faller when falling and can absorb the impact force generated by the fall, reducing the force acting on the faller. So how is the impact force generated and what factors are related to the magnitude of the impact force?

As we all know, when climbing and falling, there will be an acceleration downward, and the force generated at this time will be much greater than the weight of the faller itself, from the occurrence of the fall to the faller's rest, the crashing force generated by the faller will be absorbed and digested by the entire protection system, and most of the crash force will be absorbed by the rope. The magnitude of the impact force is related to the following three factors. Climbers of different weights will have different amounts of impact force when they fall.

Imagine that the impact force of a ping-pong ball and an apple falling on the head is not the same. So one of the factors that affect the magnitude of the impact force is the weight of the person who fell.

The international requirements for the elongation of the power rope must be controlled within 40%, the better the ductility of the rope absorbs the falling force, and the less force acting on the faller. Think about it, if you jump from the same height to the ground covered with a sponge and an uncovered floor, will you feel the same? Therefore, the second factor affecting the impact force is related to the ductility of the rope.

The greater the height of the fall under the protection of the effective rope length of the same length (the length of the rope that really plays a role when the climber falls, that is, the length of the rope between the faller and the protector), the greater the impact force generated. Imagine jumping from a height of 1 meter and a height of 3 meters to the ground covered with sea brocade at the same time, will you feel the same way? Therefore, the third factor affecting the magnitude of the impact force is the ratio of the falling height to the effective rope length, that is, the size of the falling coefficient.

To sum up: when we climb and protect, the weight of the climber is immutable. Therefore, in order to reduce the impact force generated by the climber when falling, it is necessary to choose a rope with good ductility and reduce the size of the fall coefficient.

These are two different physical quantities, and there is no such thing as being incompatible!!

It's just that you think that the impulse and the "impulse" show the same effect!! So there was a misunderstanding!!

The simplest analysis.

The unit of impulse i is n*s

All the units of force are n

How is it possible to use the = sign.

The impulse is equal to the impact force multiplied by the impact time and is also equal to the amount of change in the momentum of the object.

Formula: i=ft=mv

The impact force is the force, and the physical quantity is f; The physical quantity of impulse is i=ft. So it's not the same.

Simple. Divide.

Impulse. i-unit. n*s. Force.

Units all. n can be used with a = sign.

The formula for impulse is i ft, impulse = force multiplied by time. If the force exerted on the object is a constant force f that is constant in magnitude and direction, then the impulse i is the product of f and the time t of action. If the magnitude and direction of f are variable, the impulse i is applied to the vector integral operation.

Impulse is usually used to find the force between objects in a short-lived process (e.g. impact), that is, the force of an object is estimated from the increase in momentum and the time it acts. However, this formula cannot calculate the impulse in all cases, and can only be used to calculate the impulse of a constant force.

However, this formula cannot calculate the impulse in all cases, and can only be used to calculate the impulse of a constant force.

Impulse formula Qi Wang Jian:

The definition of impulse is i ft, but this formula does not calculate the impulse in all cases, it can only be used to calculate the impulse of constant force. Impulse is a physical quantity that describes the cumulative effect of force acting on an object over time. The impulse of the force is a process quantity.

When talking about impulse, the quiet impulse must be the impulse of which force is on which time in which period.

For example, two objects A and B with a mass of 3 kilograms, object A is thrown diagonally upward from a height of 30 meters at a muzzle velocity of 10 meters in seconds, and object B slides without muzzle velocity from a smooth surface large enough, try to compare the gravitational impulse of objects A and B within 2 seconds.

Indeed, the impact force.

The formula is: ft=δp=mv2-mv1

The meaning of the formula is that the impulse (ft) of the roundness of the object is equal to the change in the momentum (mv) of the object.

Since the time of contact between the ball and the ground is not given, it cannot be calculated. However, according to the formula, it can be known that the collision time between the ball and the hard ground is short, the impact force of the ball on the ground is large, and the impact force on the soft ground is small.

The impact force can be calculated in terms of impulse. If the velocity of an object before impact is v, the velocity after impact is u, and the impact process time is t, then the average impulse of the impact process is calculated as follows:

If the change in the momentum of the dehydrated body is δp=m(u-v), then the impulse is i=m(u-v), so the impulse is f=m(u-v) t.

where f, u, and v are vectors.

Depending on the topic, we need to calculate the impact force to the extent that the sensor is damaged. The sensor has a capacity of 2000 kg and a safety load of 150% is 3000 kg, so the maximum load that the sensor can withstand is 3000 kg.

Under the conditions of constant load of 46kg and downward pressure speed of 50mm min, we can find the force situation during the test as follows:

Force = Load Sectional Area.

Force = Load.

Broken area pin grinding old = diameter 2) 2 = 10mm 2) 2 =

Force = 46kg =

The downward pressure speed of the testing machine is 50mm min, that is, 50mm is pressed down in 1 second, and the distance of each downward pressure can be known as:

Downward pressure distance = Downward pressure speed 60 seconds time.

Time = Downward Pressure Distance Downward Pressure Speed 60 seconds.

Assuming that the duration of the impact force is lost in seconds, then the downward pressure distance is 50mm 6=, and the time is seconds, so the formula for calculating the impact force is:

Impact force = force down distance time.

Impact = =

As a result, the impact force that can reach the level of damage to the sensor is more than 150% of the safe load of 3000 kg of the sensing verter, so the sensor may be damaged during the test.

The impact force can be calculated using either the momentum theorem or the impact kinetic energy theorem. The following describes the two calculation methods of tardling:

1.Use the momentum theorem to calculate the impact trail force:

The impact force is equal to the change in momentum of an object per unit of time. Momentum (p) can be obtained by multiplying the mass of the object (m) by velocity (v) and is expressed as p = m * v. If the velocity of the object before and after the impact is v1 and v2 respectively, and the impact time is t, then the impact force (f) can be calculated by the equation:

f = m * v2 - v1)) t。

2.Calculate the impact force using the impact kinetic energy theorem:

The impact kinetic energy theorem states that the impact force can be calculated by the difference in the square of the mass and velocity of the object. If the velocity of the object before and after the impact is v1 and v2 respectively, then the impact force (f) can be calculated by the following formula: f = m * v2 2 - v1 2)) 2 * d)。

Where, d is the distance the object moves during the impact.

It is important to note that the above calculation method only applies to the impact force calculation of a single object, and it is assumed that the impact time is very short and there are no other external forces or friction forces. In complex situations, such as collisions, **, etc., more complex mechanical analysis and experimental data may be required to calculate the impact force.

ft = mv

f is the average force, t is the time, m is the mass of the object, and v is the velocity.

The force that occurs when objects collide with each other. The force that suddenly increases between objects and then disappears quickly during a collision or strike is also known as an impulse or collision force. The impact force is characterized by a very short duration of action, but the magnitude can be very large.

Sports actions such as baseball hitting, table tennis batting, volleyball smashing, football kicking, etc. are all collisions, and running and kicking the ground can also be regarded as a collision between the foot and the ground. Due to the short interaction time of collisions, often only a few hundredths of a second or even a few thousandths of a second, the momentum changes greatly in this very short time, so the impact force is very large.

Summary. Impact force refers to the force generated by the interaction between objects in a very short period of time. The magnitude of the impact force depends on the change in the momentum of the object, that is, the change in the mass and velocity of the object.

What is the difference between impact force and impact energy? Does it mean the same thing?

Impact force refers to the force generated or picked up by the interaction between objects in a very short period of time. The magnitude of the impact force depends on the change in the momentum of the object, that is, the change in the mass and velocity of the object.

So what's the difference between impact force and impact energy? <>

Hello, impact refers to the force generated by the interaction between objects in a very short period of time. The magnitude of the impact depends on the change in the momentum of the object, that is, the change in the mass and velocity of the object. If you want to calculate the impact force, you need to know the velocity and mass of the object before and after the impact of the skin, as well as the time during the impact.

The root excitation grip contains the law of conservation of momentum, and the following formula can be obtained: f = m1v1 + m2v2 - m1u1 - m2u2) t where f is the impact force, m1 and m2 are the masses of the two objects, v1 and v2 are the velocities after impact, u1 and u2 are the velocities before impact, and t is the time of impact.

The force that occurs when objects collide with each other.

The force that occurs when objects collide with each other. In the process of collision or blow, the force between objects that first suddenly increases and then quickly disappears, also known as impulse or collision force. The impact force is characterized by a very short duration of action, but the magnitude can be very large.

Sports actions such as baseball hitting, table tennis ball, volleyball smashing, football kicking, etc. are all collisions, and running and kicking can also be regarded as a collision between the foot and the ground. Due to the short interaction time of collisions, often only a few hundredths of a second or even a few thousandths of a second, the momentum changes greatly in this very short time, so the impact force is very large.

When two objects collide with each other, the momentum of one object increases, and the momentum of the other object decreases and sells less. When smashing the ball in volleyball, the mass of the ball is unchanged, and the object [hand] used to collide should make the volleyball move fast, and the mass should be large, not only the hand should participate, but also the arm and torso should be involved, and the hand, arm, and torso should coordinate and cooperate to form an overall force to increase the quality of the shot, so that the time to hit the ball is very short, and the impact force is great.

ft = δmv, f is the average force, t is the time, m is the mass of the object, v is the velocity, and δ is the amount of change; This formula is understood to mean that the force of impact and the amount of time it takes to act on an object are equal to the amount of change in the momentum bridge of that object.