$4$

Problem

a$)$ Explain why someone would use the following notation to express a manufa tolerance, rather than any of the other ways to express tolerance:

minimum value $\{\begin{array}{ccc}\text{:}[+& \text{t}\text{o}\text{l}\text{e}\text{r}\text{a}\text{n}\text{c}\text{e}& ]\\ -0\end{array}$

b$)$ A measurement is given as:

${0\mathrm{.}043}^{\text{'}\text{'}}+0\mathrm{.}000$

Is $0\mathrm{.}045$ larger or smaller than the nominal value?

$2.$ At an intersection, there is a special traffic signal just for bicycles that allows them protected left turn.

The bicyclists' turn signal is triggered when a plate in the road detects a weight betwe and $525$ pounds.

a$)$ What is the tolerance of the weight plate?

b$)$ Why is the tolerance of the weight plate so high?

c$)$ Why would there be an upper limit on the weight plate?