Measurement of force of blow requires change of an impulse of a body which is considered beating (ideally it is mutual process), to divide into interaction time. For this purpose it is necessary to measure the weight and speed of a body previously. For measurement of force of any any blow use a special dynamometer.
It is required to you
- Scales, sensors of measurement of speed, electronic timer, dynamometer (kik-tester).
Instruction
1. Measurement of force of elastic blow Attach the sensor of the electronic timer to the place of contact of two bodies. As much as possible to reduce influence of third-party forces and also dispersion of energy on heating, take a rubber ball which has high elasticity. After that dump it on the sensor from some height, without making for it efforts. Time of impact will be highlighted on the sensor screen and to find speed, the falling height measured in meters increase by 19.62 and take a square root from the received number. After that weigh a ball on scales and the received weight in kilograms, increase by speed and divide into time specified on the timer in seconds. Increase the received number by 2. Blow force in Newtons will be result.
2. Measurement of force of inelastic blow Take a plasticine ball instead of a rubber ball. Further do the same actions and calculations which were carried out for measurement of elastic blow. For obtaining value of force of blow increase weight by speed and divide into time in seconds. In this case it is not necessary to multiply result by 2. It will also be force of inelastic blow.
3. Measurement of force of blow by a dynamometer For measurement take a special dynamometer which is called a kik-tester. It measures the maximum force for a short period. Place the sensor on a firm surface (the usual wall will approach) and strike a blow. On a board blow force will appear. As a rule, such tester gives result in kilograms. To receive result in Newtons, it is necessary to increase the number displayed on the sensor screen by 9.81. The second option – use the kik-tester attached to a punching bag and fixing force of blow to degree of its deviation. In this case contact area is not considered, the average value of force will be result.