vector methods and comparing the results.

As shown, a curved member is fixed at point $O.$ The radius of the member is $r=3\mathrm{.}40ft$ and $F$ has magnitude $F=420lb.($Figure $1)$

Figure

$2$ of $2$

$$ Correct

Once you have completed Part C$,$ its answer will be added to this one to find the net moment, which then will be compared to the moment found in Part A$.$

Part $C-$ Calculating the moment about $O$ due to the $y$ component of $F$

The force vector $F$ can be written as the sum of component vectors $F=(F{)}_x+(F{)}_y.$ We can use the scalar method to individually compute the contributions to the moment from the components. $($Figure $2)$ What is the moment abo O due to only the $y$ component of $F?$

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

View Available Hint$($s$)$

$(M_O{)}_y=F_y{d}_y=lb-ft$

Previous Answers

$x$ Incorrect; Try Again; $2$ attempts remaining