Mechanics - Forces and Motion
See Also
- Physics - Force and NewtonsA
- Mechanics - FrictionA
- Mechanics - Forces on SlopesA
- Mechanics - ForcesA
Flashcards
2021-01-05
What is a force diagram?
A diagram showing all the forces acting on an object.
What should you draw whenever you have a problem involving forces in Mechanics?
A force diagram.
In $\hat{i}$ and $\hat{j}$ notation, what is the value of a resultant force for an object in equilibrium?
2021-02-02
If
\[\left(\begin{matrix} 2+p \\ 5+q \end{matrix}\right)\]is parallel to
\[\left(\begin{matrix} 1 \\ -2 \end{matrix}\right)\], what equation could you write in terms of a new variable $k$ to aid in solving??
\[\left(\begin{matrix} 2+p \\ 5+q \end{matrix}\right) = \left(\begin{matrix} k \\ -2k \end{matrix}\right)\]If
\[\left(\begin{matrix} 2+p \\ 5+q \end{matrix}\right) = \left(\begin{matrix} 1k \\ -2k \end{matrix}\right)\]is true, what two equations can you write??
\[2+p = k \\\\ 5+q = -2k\]#####
\[2+p = k \\ 5+q = -2k\]How could you rewrite this so it’s just in terms of $p$ and $q$??
\[-2(2 + p) = 5 + q\]2022-03-28
If \(\left(\begin{matrix} 2+p \\ 5+q \end{matrix}\right)\) is parallel to \(\left(\begin{matrix} 1 \\ -2 \end{matrix}\right)\), what equation could you write in terms of a new variable $k$ to aid in solving?
If \(\left(\begin{matrix} 2+p \\ 5+q \end{matrix}\right) = \left(\begin{matrix} 1k \\ -2k \end{matrix}\right)\) is true, what two equations can you write?
\(2+p = k \\ 5+q = -2k\) How could you rewrite this so it’s just in terms of $p$ and $q$?
2022-05-01
What’s the normal procedure for answering a ladder or hinge question?
- Take moments
- Resolve forces
How many components of reaction are there at a wall in a ladder question?
Is the reaction force necessarily the resultant force??
No, not if there is friction involved.