Two blocks AA and BB shown in $($Figure $1)$ have a weight of $11$ lblb and $6$ lblb$,$ respectively. They are resting on the incline for which the coefficients of static friction are AA $=0\mathrm{.}13$ and BB $=0\mathrm{.}27.$ Determine the incline angle for which both blocks begin to slide. Also find the required stretch or compression in the connecting spring for this to occur. The spring has a stiffness of kk $=2\mathrm{.}0$ lb$/$ftlb$/$ft$.$

Figure

$1$ of $1$

Part A

Determine the incline angle for which both blocks begin to slide.

Express your answer to three significant figures and include the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

$=$

nothingnothing

SubmitRequest$$Answer

Part B

Determine the change of the length of $$the spring. Assume this change to be positive if the spring is stretched and negative if the spring is compressed.

Express your answer to three significant figures and include the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

xx $=$

nothingnothing

SubmitRequest$$Answer