# QB/a04DynForce Newton forces

**I just made a video that is available in three places:**

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See also the pdf printout of the slides

**Lake Campus Symposium: Creating a bank so students won't break the bank**

https://bitbucket.org/Guy_vandegrift/qbwiki/wiki/Home/

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See special:permalink/1863116 for a wikitext version of this quiz.

### LaTexMarkup begin

%

%CurrentID: - %PDF: File:Quizbankqb_a04DynForce Newton forces.pdf%Required images:

```
%This code creates both the question and answer key using \newcommand\mytest
%%% EDIT QUIZ INFO HERE %%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand{\quizname}{QB/a04DynForce Newton_forces}
\newcommand{\quiztype}{numerical}%[[Category:QB/numerical]]
%%%%% PREAMBLE%%%%%%%%%%%%
\newif\ifkey %estabkishes Boolean ifkey to turn on and off endnotes
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% BEGIN DOCUMENT
\begin{document}
\title{a04DynForce Newton\_forces}
\author{The LaTex code that creates this quiz is released to the Public Domain\\
Attribution for each question is documented in the Appendix}
\maketitle
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\keytrue
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\begin{questions}
\question A mass with weight (mg) of 44 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 60 degrees. What is the tension in the string?\ifkey\endnote{a04DynForce Newton\_forces\_1 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863116}}}\fi
\begin{choices}
\choice 16.7 N.
\choice 19.2 N.
\choice 22.1 N.
\CorrectChoice 25.4 N.
\choice 29.2 N.
\end{choices}
\question A mass with weight (mg) equal to 25 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 69 degrees with respect to the horizontal. What is the tension in each string?\ifkey\endnote{a04DynForce Newton\_forces\_2 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863116}}}\fi
\begin{choices}
\choice 10.1 N.
\choice 11.6 N.
\CorrectChoice 13.4 N.
\choice 15.4 N.
\choice 17.7 N.
\end{choices}
\question A 4.5 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.37 . In addition to the surface friction, there is also an air drag equal to 29 N. What is the magnitude (absolute value) of the acceleration?\ifkey\endnote{a04DynForce Newton\_forces\_3 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863116}}}\fi
\begin{choices}
\choice 5.8 m/s\textsuperscript{2}.
\choice 6.6 m/s\textsuperscript{2}.
\choice 7.6 m/s\textsuperscript{2}.
\choice 8.8 m/s\textsuperscript{2}.
\CorrectChoice 10.1 m/s\textsuperscript{2}.
\end{choices}
\question A mass with weight (mg) 7.3 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 3.94 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction? \ifkey\endnote{a04DynForce Newton\_forces\_4 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863116}}}\fi
\begin{choices}
\choice 0.37
\choice 0.44
\choice 0.53
\CorrectChoice 0.64
\choice 0.77
\end{choices}
\end{questions}
\newpage\section{Renditions}
\subsection{}%%%% subsection 1
\begin{questions} %%%%%%% begin questions
\question A mass with weight (mg) of 48 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 30 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 24.8 N.
\choice 28.6 N.
\choice 32.9 N.
\choice 37.8 N.
\choice 43.5 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 37 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 44 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\choice 11.4 N.
\choice 13.1 N.
\choice 15.1 N.
\choice 17.4 N.
\CorrectChoice 20 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 42 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 46 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\choice 15 N.
\choice 17.3 N.
\choice 19.8 N.
\CorrectChoice 22.8 N.
\choice 26.2 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 27 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 70 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\choice 12.5 N.
\choice 14.3 N.
\CorrectChoice 16.5 N.
\choice 19 N.
\choice 21.8 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 32 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 70 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\choice 12.8 N.
\choice 14.8 N.
\choice 17 N.
\CorrectChoice 19.5 N.
\choice 22.5 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 39 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 56 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 22.1 N.
\choice 25.4 N.
\choice 29.2 N.
\choice 33.6 N.
\choice 38.6 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 49 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 54 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 27.5 N.
\choice 31.6 N.
\choice 36.4 N.
\choice 41.8 N.
\choice 48.1 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 48 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 46 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\choice 22.7 N.
\CorrectChoice 26.1 N.
\choice 30 N.
\choice 34.5 N.
\choice 39.7 N.
\end{choices} %%% end choices
\question A mass with weight (mg) of 32 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 40 degrees. What is the tension in the string?
\begin{choices} %%%%%%% begin choices
\choice 11.2 N.
\choice 12.9 N.
\choice 14.8 N.
\CorrectChoice 17 N.
\choice 19.6 N.
\pagebreak
\end{choices}
\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 2
\begin{questions} %%%%%%% begin questions
\question A mass with weight (mg) equal to 29 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 60 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 12.7 N.
\choice 14.6 N.
\CorrectChoice 16.7 N.
\choice 19.3 N.
\choice 22.1 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 34 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 14 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 61.1 N.
\CorrectChoice 70.3 N.
\choice 80.8 N.
\choice 92.9 N.
\choice 106.9 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 42 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 26 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 27.4 N.
\choice 31.5 N.
\choice 36.2 N.
\choice 41.7 N.
\CorrectChoice 47.9 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 41 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 30 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 23.4 N.
\choice 27 N.
\choice 31 N.
\choice 35.7 N.
\CorrectChoice 41 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 33 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 72 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 9.9 N.
\choice 11.4 N.
\choice 13.1 N.
\choice 15.1 N.
\CorrectChoice 17.3 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 44 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 60 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 14.5 N.
\choice 16.7 N.
\choice 19.2 N.
\choice 22.1 N.
\CorrectChoice 25.4 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 21 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 66 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 6.6 N.
\choice 7.6 N.
\choice 8.7 N.
\choice 10 N.
\CorrectChoice 11.5 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 42 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 59 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 21.3 N.
\CorrectChoice 24.5 N.
\choice 28.2 N.
\choice 32.4 N.
\choice 37.3 N.
\end{choices} %%% end choices
\question A mass with weight (mg) equal to 37 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 65 degrees with respect to the horizontal. What is the tension in each string?
\begin{choices} %%%%%%% begin choices
\choice 15.4 N.
\choice 17.7 N.
\CorrectChoice 20.4 N.
\choice 23.5 N.
\choice 27 N.
\pagebreak
\end{choices}
\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 3
\begin{questions} %%%%%%% begin questions
\question A 2.1 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.46 . In addition to the surface friction, there is also an air drag equal to 14 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 6.4 m/s\textsuperscript{2}.
\choice 7.3 m/s\textsuperscript{2}.
\choice 8.4 m/s\textsuperscript{2}.
\choice 9.7 m/s\textsuperscript{2}.
\CorrectChoice 11.2 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 3 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.27 . In addition to the surface friction, there is also an air drag equal to 7 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 3.8 m/s\textsuperscript{2}.
\choice 4.3 m/s\textsuperscript{2}.
\CorrectChoice 5 m/s\textsuperscript{2}.
\choice 5.7 m/s\textsuperscript{2}.
\choice 6.6 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 2.4 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.68 . In addition to the surface friction, there is also an air drag equal to 6 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 9.2 m/s\textsuperscript{2}.
\choice 10.5 m/s\textsuperscript{2}.
\choice 12.1 m/s\textsuperscript{2}.
\choice 13.9 m/s\textsuperscript{2}.
\choice 16 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 2.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.59 . In addition to the surface friction, there is also an air drag equal to 14 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 6.9 m/s\textsuperscript{2}.
\choice 8 m/s\textsuperscript{2}.
\choice 9.2 m/s\textsuperscript{2}.
\choice 10.6 m/s\textsuperscript{2}.
\CorrectChoice 12.1 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 2.5 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.41 . In addition to the surface friction, there is also an air drag equal to 11 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 7.3 m/s\textsuperscript{2}.
\CorrectChoice 8.4 m/s\textsuperscript{2}.
\choice 9.7 m/s\textsuperscript{2}.
\choice 11.1 m/s\textsuperscript{2}.
\choice 12.8 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 3.8 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.6 . In addition to the surface friction, there is also an air drag equal to 20 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 6.4 m/s\textsuperscript{2}.
\choice 7.3 m/s\textsuperscript{2}.
\choice 8.4 m/s\textsuperscript{2}.
\choice 9.7 m/s\textsuperscript{2}.
\CorrectChoice 11.1 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 3.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.29 . In addition to the surface friction, there is also an air drag equal to 21 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 8.2 m/s\textsuperscript{2}.
\CorrectChoice 9.4 m/s\textsuperscript{2}.
\choice 10.8 m/s\textsuperscript{2}.
\choice 12.4 m/s\textsuperscript{2}.
\choice 14.3 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 2.3 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.41 . In addition to the surface friction, there is also an air drag equal to 16 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 7.2 m/s\textsuperscript{2}.
\choice 8.3 m/s\textsuperscript{2}.
\choice 9.5 m/s\textsuperscript{2}.
\CorrectChoice 11 m/s\textsuperscript{2}.
\choice 12.6 m/s\textsuperscript{2}.
\end{choices} %%% end choices
\question A 3.1 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.43 . In addition to the surface friction, there is also an air drag equal to 12 N. What is the magnitude (absolute value) of the acceleration?
\begin{choices} %%%%%%% begin choices
\choice 4.6 m/s\textsuperscript{2}.
\choice 5.3 m/s\textsuperscript{2}.
\choice 6.1 m/s\textsuperscript{2}.
\choice 7 m/s\textsuperscript{2}.
\CorrectChoice 8.1 m/s\textsuperscript{2}.
\pagebreak
\end{choices}
\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 4
\begin{questions} %%%%%%% begin questions
\question A mass with weight (mg) 5.3 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 3.05 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.34
\choice 0.4
\choice 0.49
\choice 0.58
\CorrectChoice 0.7
\end{choices} %%% end choices
\question A mass with weight (mg) 8.7 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 4.08 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.31
\choice 0.37
\choice 0.44
\CorrectChoice 0.53
\choice 0.64
\end{choices} %%% end choices
\question A mass with weight (mg) 7.9 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 1.64 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.1
\choice 0.12
\choice 0.14
\choice 0.17
\CorrectChoice 0.2
\end{choices} %%% end choices
\question A mass with weight (mg) 10.8 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 4.53 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.38
\CorrectChoice 0.46
\choice 0.55
\choice 0.66
\choice 0.79
\end{choices} %%% end choices
\question A mass with weight (mg) 11 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 2.77 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.12
\choice 0.14
\choice 0.17
\choice 0.21
\CorrectChoice 0.25
\end{choices} %%% end choices
\question A mass with weight (mg) 6.8 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 2.5 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.19
\choice 0.23
\choice 0.27
\choice 0.33
\CorrectChoice 0.39
\end{choices} %%% end choices
\question A mass with weight (mg) 6 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 3.2 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.52
\CorrectChoice 0.63
\choice 0.76
\choice 0.91
\choice 1.09
\end{choices} %%% end choices
\question A mass with weight (mg) 8.9 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 5.12 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\CorrectChoice 0.7
\choice 0.84
\choice 1.01
\choice 1.21
\choice 1.45
\end{choices} %%% end choices
\question A mass with weight (mg) 8.7 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 4.08 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
\begin{choices} %%%%%%% begin choices
\choice 0.44
\CorrectChoice 0.53
\choice 0.64
\choice 0.76
\choice 0.92
\end{choices} %%% end choices
\end{questions}\pagebreak
\section{Attribution}
\theendnotes
\end{document}
```

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