Vibration/Centrifugal Force Question

AI Thread Summary
The discussion revolves around calculating the centrifugal force generated by an electric motor with eccentric weights mounted on both sides. The motor operates at 1000 RPM, with a total weight of 16.8 kg distributed evenly (8.4 kg on each side) and a radius of 103 mm. Participants clarify that "generated force" should be measured in Newtons, not kilograms, with 1 kgf equating to approximately 9.81 N. The conversation also touches on the analogy of swinging a rock in a circle to explain the mechanics involved. The final goal is to determine the centrifugal force for the vibration project.
svansvan
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Hello

I am making a vibration project which requires me to mount eccentric weights on both sides of an electric motor. I must submit the "generated force(in Kg)" by this motor.The RPM of motor = 1000
Total weight on both sides of the motor = 16.8Kg (8.4Kg on both sides)
The radius(distance from the center of the shaft to the end of the weight) = 103 mmWhat will be creation of Centrifugal force when this motor is run at 1000 RPM ??Dhiraj
 
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Where are you going to locate these weights? At what radius?

Think about the problem of tension in a string holding a rock and being swung in a circle. Your problem is similar.
 
svansvan said:
I must submit the "generated force(in Kg)" by this motor.
This doesn't make sense. "Generated force" is measured in Newtons, not kilograms.
 
Dale, it does if you work in the bastard (old) metric system that measured forces in kilograms. This is exactly analogous to measuring mass in pounds. I certainly don't recommend this, but I have to recognize it when I see it happening.
 
So is a "1 kg force" equal to 1 N or 9.8 N?
 
Dale, it is the later, 1 kgf = 9.807 N.
 
Dale, there is also the perhaps more common gram-force, such that 1 gf = 980.7 dynes.
 

take a look at this video. The motor has to be used like this. To vibrate certain appratus
also look at this image for weight placement
xx.JPG
gthanks
 
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