Is Converting Kgcm to Nm Correct?

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Homework Help Overview

The discussion revolves around the conversion of units, specifically from kgcm to Nm, and the implications of these conversions in the context of torque and force. Participants are exploring the dimensional differences between mass and force units.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants are attempting to clarify the conversion process from kgcm to Nm and questioning the validity of their calculations. There are discussions about the dimensional differences between kg and Newtons, as well as the appropriate conversion factors for length.

Discussion Status

Some participants have offered insights into the conversion factors and the relationship between torque and force. There is an ongoing exploration of the correct approach to unit conversion, with multiple interpretations being considered. The original poster expresses confusion regarding the conversion process and seeks clarification on their understanding.

Contextual Notes

There are indications of potential misunderstandings regarding the definitions of torque and force, as well as the correct application of unit conversions. The discussion is framed within the context of homework help, suggesting constraints on the type of guidance that can be provided.

Lorens
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We got 1.28 Kgcm

we turn cm to meter 128kgm

Then we turn it into Newton then we get about 1280NM

Problem is that i get some indication that this is wrong... is it?



(how do i get ride of overlay in explorer )
 
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What's NM? And Kg m (or more generally Mass.Length) is not dimensionally the same as a Newton(Mass.Length.Time^-2).
 
Astronuc said:
It looks like one is trying to develop a moment and force or torque?
If 1.28 Kgcm = 1.28 kg-cm, then multiply by 1 m / 100 cm to to get 0.0128 kg m.
As neutrino pointed out, kg is a unit of mass and Nt (or N) is a unit of force.
1 kg * 9.8 m/s2 = 9.8 kg-m/s2 = 9.8 Nt or
0.102 kgf = 1 Nt.
For units conversion, here is a nice reference -
http://www.projects.ex.ac.uk/trol/scol/ccforce.htm for force
In general - http://www.projects.ex.ac.uk/trol/scol/index.htm

I am not intrsted in what to do, i am interested in what i am doing wrong, you say that 1kgcm is 0.01kgm, i don't get that. It is a torque for a motor.
 
This is a conversion of unit problem.

I was simply pointing out the to convert a length in cm to a length in meters, one multiplies by the a factor which relates the two.

for example 1 cm = 0.01 m, or 1 m = 100 cm. The conversion factor can be 0.01 m/cm or 100 cm/m.

If a torque is written in kgf-cm and one wishes to convert it to kgf-m, then one must multiply by 1 m/100 cm, and one will get

1 kgf-cm * 1 m/ 100 cm = 0.01 kgf-m.
 

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