can someone help me with part b

[tame grove]

currently crying 😭

[lavish ingot]

I have used F=ma

oops

it should just be m(0.8)

not mg(0.8)

[tame grove]

ty

also can a <@&791435371564892232> either teach me or send me a yt video link of how to turn vectors from polar to component form and other way .

[onyx heath]

what

are you on about

[tame grove]

this stuff

[trim nexus]

i think ur refering to

position vectors

no?

[lavish ingot]

you legit jus draw a triangle

that's it

[tame grove]

How do u find the angle

[onyx heath]

draw the problem out

anything with vectors or like finding distances, angles etc its best to draw it out

[trim nexus]

180 minus

arcos((p.j)/5))

joking

do what goose said

those who know

[onyx heath]

are you actually in yr 11

[trim nexus]

nah y12

[trim nexus]

i wish

[onyx heath]

'hey guys how do you know I take further maths' ahh

[trim nexus]

😭

so real

[dusk solstice]

,w arctan(3/4) in degrees

[spare dome]

Results provided by WolframAlpha

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Requested by cord7544

[trim nexus]

draw smth like this

oh yeh ggs i forgot that its negative 💀

[onyx heath]

why does -3 mean 3 units left/down

why cant -3 mean 3 units right/up

who decided this

why does no one question this

we are all intellectually enslaved by the greats of academia who preceded us

[trim nexus]

bro reversing positive directions (just to get the same answer)

[trim nexus]

💀

[tame grove]

How do u do b

[tame grove]

What does it mean by the angle between p and the vector j

[tame grove]

<@&791435371564892232>

[onyx heath]

well

what direction does j represent

[tame grove]

Up and down

[light marsh]

dot product

[tame grove]

Ah I kinda see

[light marsh]

you do fm right?

[tame grove]

Huh

[light marsh]

if not then idk how you'd do it in regular

[tame grove]

No I don’t do fm lol

[light marsh]

oh id draw it out

use trig to find the 2 angles and then subtract from 180 idk

[tame grove]

Ok Ty

[light marsh]

yh like that

[tame grove]

Can u just put this one into calc

@light marsh

[light marsh]

4 cos 30 i + 4 sin 30j so 2root3 i + 2j? idk

lemme check

yh

well it will be -2j cuz y component is going down not up 😊

[onyx heath]

no i is up/down

j is right/left

Think of p as a line going 3 left 4 up everytime

So its basically asking to find the angle between this ‘line’ p and the j direction (aka the x axis)

[hollow halo]

yh that is correct

[tame grove]

Wrong

[vocal mango]

really goose ...

i is in x-direction
j is in y-direction

[onyx heath]

nah yall are wrong

i to the sky

j to the exit-ayy 💅

[light marsh]

the dissapointment in that message is loud

[solid raven]

😭😭

[vocal mango]

glad it’s clear

[hollow halo]

This is a 90 degree angle you can find the other length and do Pythagorean theorem

[hollow halo]

Component will be -x and -y could be wrong

[light marsh]

why -x