# Moment in different dimensions in 2 D

abdo799

## Homework Statement

This isn't exactly a HW question, it's a question in my statics midterm today, he wants the reactions at the supports B and C, which is easy but the problem is this 60 N.m moment, all my friends were like :" let's just sum the moments around B ( due to the 50 N and the reaction at C) and just add this 60 N.m, but when i tried it , the reaction at C was 1100 N , which is kinda huge , plus , i don't think we can just add them , as the dimension of the moment created by the 50 N and the reaction at C is in the k direction while the 60 N.m ( using the right hand rule) should be in the i direction, so i don't think we can just add them up

## The Attempt at a Solution

#### Attachments

• 1964883_1565011183715081_5932756546489494617_n.jpg
23 KB · Views: 441

Homework Helper
Gold Member
2022 Award
While the diagram does make it look as though the 60N.m is twisting the structure out of the page, that doesn't make much sense mechanically. There is no countering torque. So I suspect it is intended to be in the k direction. Any wording in the question that might clarify?

abdo799
the wording was , find the reaction at B and C if a = 1.5
makes no sense if this was in the k direction, because, why would he even draw it there, the moment in the K direction is drawn 99% of the times around one of the supports