physics help :( (1 Viewer)

[AnandDNA]

A hand roller is pulled by a force of 300N. Calculate the components of the force in both the horizontal and vertical directions???

I really dont understand all these components stuff so if anyone can guide me through it, that'll be greatly appreciated

 

[me121]

umm they don't tell you a direction of the 300N? so you can't work out the components.

but in general..
x component = magnitude cos angle
y component = magnitude sin angle

where angle is the angle made with the positive x axis

 

[AnandDNA]

oh yeh sorry there was a diagram next on the page below. The angle was 30 degrees.
yeh so i worked it out now thanks for the reply though. Oh 1 more thing i never actually understood what magnitude is so can someone pls explain it to me

 

[Arowana21]

OMG...
Magnitude=size...in this case the size of the force, which is 300N

 

[me121]

r=sqrt(x^2+y^2)
theta = tan-1(y/x)

x=r cos(theta)
y=r sin(theta)

these are like 1000% needed to know. really basic. really important.

 

[me121]

HEY!! Please don't double post!!!

/close.

http://community.boredofstudies.org/showthread.php?p=3502855