The discussion revolves around a statics problem involving the calculation of moments and torques related to forces acting on a pivot. Participants are exploring the correct application of torque principles and the significance of moment arms in their calculations.
Some participants have provided guidance on checking calculations and understanding the relationship between forces, distances, and torque. There is ongoing exploration of unit conversions and the implications of different results, indicating a productive dialogue without explicit consensus.
Participants are working under the constraints of a homework assignment, which may limit the information available for solving the problem. There are indications of confusion regarding unit conversions and the relationship between force and torque calculations.
PhanthomJay said:Looks like you forgot to multiply by the moment arm perpendicular distance to the pivot. Also, check your signs for each of the torques.
Watch your units. If the torque is in N.m, then Force should be in Newtons and distance should be expressed in meters.ZaZu said:Ok I think i got it :D :D
http://img80.imageshack.us/img80/2008/image167k.jpg
Im not sure about the final result though, is it N or Kn or Nm ..
The given answer is 81.1N .. I found 8116 .. hmm if the supposed answer is 81.1Kn then my answer would be correct for N.
Correct me if I am mistaken.
PhanthomJay said:Watch your units. If the torque is in N.m, then Force should be in Newtons and distance should be expressed in meters.
It must be your algebra:ZaZu said:So where does that leave me ?? Am I supposed to convert or anything ?? If I divide by 100 I get the correct answer. But I want to know why am I dividing by a hundred.
Can you please tell me ? I got test tomorrow and its getting late =\
I really need to know how to correct my mistakes !