moments

[low moth]

No markscheme is correct

[sterile patrol]

So what did I do wrong?

[late rock]

ill explain 1 sec

$Moment=F\cdot s\ \
\text{Using SOHCAHTOA: }\ \
\sin(30)=\frac{F_{up}}{F}\ \
F=\frac{F_{up}}{\sin(30)}\ \
\text{Substituting in: }\ \
(15)=(\frac{F_{up}}{\sin(30)})\cdot(12)\ \
F_{up}=\frac{15\sin(30)}{12}=0.625Nm$

idk but thats what I got

doing it in head

[sterile patrol]

Ight I’ll look

Why sin tho cuz we don’t have an hypotenuse

[late rock]

a moment deals with the perpendicular force

F_up

the force perpendicular to the line of action from the pivot

[late parrot]

Ec1ipse

[sterile patrol]

How would you draw it?

[late rock]

same as the diagram

im not getting paper out

[sterile patrol]

So 12 is your hypo to use

[late rock]

no

you are finding the vertical component of the force

since that is what you need to calculate the moment

which you are given

[sterile patrol]

Yeah

[late rock]

oops I missed 1 step

subbing back in

@native dove moments

brain deep fried

like chicken

but better

[sterile patrol]

,close