All Questions
5
questions
0
votes
2
answers
404
views
Difference between moment and couple
What is the exact difference between a moment and a couple? In some YouTube channels and books, they say the moment of a force produces a translational as well as rotational motion whereas the concept ...
8
votes
5
answers
607
views
Why is torque defined as $\vec{r} \times F$?
Here I cannot convince myself myself that it is units because the torque is defined to be in units of Newton meter is a reiteration of the law stated above. Why was it not $r^2 \times F$ or $r^3 \...
- 460
0
votes
3
answers
161
views
The unit of Torque [duplicate]
Whenever we define a physical quantity, we know what 1 unit of that quantity tells us. For example, when we say 5 Pa, we're saying 5 N force acts perpendicularly on every unit area of the material but ...
- 87
1
vote
1
answer
3k
views
Why is moment of a force calculated by cross product?
Why the moment of a force is calculated by the cross product of two vectors,how it is related ? And what does it means ,when I said that moment of a force about a point is for example 6 N.m ? I want ...
- 47
2
votes
2
answers
2k
views
Definition of torque for a continuous body
I am working on basic physics definitions. Given a particle at position $r$ (in some coorinate reference system) upon which acts a force $F$, the $torque$ $\tau$ is defined by
\begin{equation}
\tau:=r\...
- 279