How to calculate the pendulum force
Publish: 2021-04-14 15:35:57
1. The maximum impact strength divided by the plasticity multiplied by 100%
2. It should be calculated according to kinetic energy equation and impulse equation
1 / 2mV ^ 2 = MGH (H = l-lcosa)
MV = ft
but you have time in your topic
according to your notes, it is obvious that the force is different, which is related to the action time of the penlum, among other parameters
1 / 2mV ^ 2 = MGH (H = l-lcosa)
MV = ft
but you have time in your topic
according to your notes, it is obvious that the force is different, which is related to the action time of the penlum, among other parameters
3. The principle is to measure the energy consumed by the punch through the sample at a certain impact speed, and evaluate the energy value of the sample against penlum impact based on the energy
the energy consumed by impact can be clearly shown on the dial of the tester
Shanghai Jiuge Electromechanical Technology Co., Ltd. hopes to help you.
the energy consumed by impact can be clearly shown on the dial of the tester
Shanghai Jiuge Electromechanical Technology Co., Ltd. hopes to help you.
4. In the process of downward swing of single penlum, the height graally (decreases), the speed graally (increases), the gravitational potential energy graally (decreases), the kinetic energy graally (increases), and the (gravitational potential energy) energy transforms into (kinetic) energy.
2. In the process of upward swing of penlum, the height graally (increases), the speed graally (decreases), the gravitational potential energy graally (increases), and the kinetic energy graally (decreases), Energy (kinetic energy) is converted into energy (gravitational potential)
2. In the process of upward swing of penlum, the height graally (increases), the speed graally (decreases), the gravitational potential energy graally (increases), and the kinetic energy graally (decreases), Energy (kinetic energy) is converted into energy (gravitational potential)
5. The penlum swings back and forth once< This is for the convenience of calculation.
a cycle comes and goes, so when we calculate the number of swings, we count them according to the cycle.
the correct way is to start from the highest point and count them once every time we reach the same highest point.
the other way is to count them once every time we reach the highest point, but the number should be divided by 2. Otherwise, the number is wrong
a cycle comes and goes, so when we calculate the number of swings, we count them according to the cycle.
the correct way is to start from the highest point and count them once every time we reach the same highest point.
the other way is to count them once every time we reach the highest point, but the number should be divided by 2. Otherwise, the number is wrong
6. The time of a single penlum swing cycle has nothing to do with the weight of the penlum, only with the length of the penlum and the acceleration of gravity, and because the acceleration of gravity is constant, only with the length of the penlum
t = 2 π Where l is the length of the penlum, G is the acceleration of gravity, t is the period, the larger the period, the longer the time required, and the slower the penlum, so it has nothing to do with gravity.
t = 2 π Where l is the length of the penlum, G is the acceleration of gravity, t is the period, the larger the period, the longer the time required, and the slower the penlum, so it has nothing to do with gravity.
7. What is impact blade
you can't answer this question. Because when your penlum falls to the position perpendicular to the ground, its impact force is the impact force in motion. We know that the longer the force sticks to the object under force, that is, the longer the impact time on an object, the smaller the average impact force on the object under force. In this process, the impact force given by the penlum is not balanced That is to say, the impact force at each instant is different.) Impulse is equal to the change of momentum. That is: f * t = m * (v2-v1) + m * (v2-v1).
you can't answer this question. Because when your penlum falls to the position perpendicular to the ground, its impact force is the impact force in motion. We know that the longer the force sticks to the object under force, that is, the longer the impact time on an object, the smaller the average impact force on the object under force. In this process, the impact force given by the penlum is not balanced That is to say, the impact force at each instant is different.) Impulse is equal to the change of momentum. That is: f * t = m * (v2-v1) + m * (v2-v1).
8. The working principle of penlum is simple penlum (simple harmonic vibration)
simple penlum is an ideal physical model, which is composed of idealized penlum ball and cycloid; In this way, the penlum ball can be regarded as a particle, and the penlum ball is composed of cycloid and penlum ball; ten ° The period of a simple penlum is t = 2 π It can be seen from the formula that the period of a simple penlum has nothing to do with the amplitude and the mass of the penlum ball. From the perspective of force, the restoring force of a simple penlum is the component of gravity along the tangent direction of the arc and points to the equilibrium position. The larger the deflection angle is, the greater the restoring force is, the greater the acceleration g is, and the longer the arc is in the same time. Therefore, the period has nothing to do with the amplitude and mass, It is only related to the length of penlum L and the acceleration of gravity G
simple penlum is an ideal physical model, which is composed of idealized penlum ball and cycloid; In this way, the penlum ball can be regarded as a particle, and the penlum ball is composed of cycloid and penlum ball; ten ° The period of a simple penlum is t = 2 π It can be seen from the formula that the period of a simple penlum has nothing to do with the amplitude and the mass of the penlum ball. From the perspective of force, the restoring force of a simple penlum is the component of gravity along the tangent direction of the arc and points to the equilibrium position. The larger the deflection angle is, the greater the restoring force is, the greater the acceleration g is, and the longer the arc is in the same time. Therefore, the period has nothing to do with the amplitude and mass, It is only related to the length of penlum L and the acceleration of gravity G
9.
according to the kinetic energy theorem: T = MGL
the velocity of the initial position and the end position of the penlum is zero, T1 = T2 = 1 / 2mV ^ 2 = 0, that is, t = T1-T2 = 0
the penlum is only subject to gravity mg, rod length L, regardless of rod weight and resistance and other factors φ 1)-mg(L-Lcos φ 1) Figure 1
if the specimen is impacted by penlum, then
0 = Mg (l-lcos) φ 1)-mg(L-Lcos φ 2) - wk, where wk = Mg (LCOS) φ 2-Lcos φ 3) Is the work absorbed by the specimen, Fig. 2
10. The calculation of the impact strength has nothing to do with the weight of the penlum. The size of the penlum is the known impact energy. After the impact, the impact strength is calculated according to the lost energy.
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