physics question :( (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

 

[Felix Jones]

you cant solve this question....u forgot the angle...
anyways, the horizona component is 300*cos(theta)
......................vertical component is 300*sin(theta)

 

[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.

 

[Felix Jones]

np

 

[Aerath]

Haha - but I don't think you need to know forces with angles for Year 11 Moving About. Dunno why it's in the textbook, though. =\

 

[shaon0]

Haha - but I don't think you need to know forces with angles for Year 11 Moving About. Dunno why it's in the textbook, though. =\

You might need to know angular forces but not angular momentum (radians)

 

[Aerath]

You might need to know angular forces but not angular momentum (radians)

Oh ok. Just at our school, we didn't have to use sin/cos at all. (for going up/down ramps).

 

[Aplus]

Don't you have to use sin and cos when finding components?

 

[Aerath]

Don't you have to use sin and cos when finding components?

I was referring to ramps and stuff.

 

[osamaelias]

Don't you have to use sin and cos when finding components?

Yes , but not always.

 

[Continuum]

Uhh... what the... I thought you definately had to know how to decompose a vector into its components - especially for ramps and the force of gravity mg. Is somebody pulling my leg?

 

[Aerath]

Uhh... what the... I thought you definately had to know how to decompose a vector into its components - especially for ramps and the force of gravity mg. Is somebody pulling my leg?

It wasn't in dotpoint. And our teacher told us not to study for it in our exams. Maybe it's just my school?

 

[shaon0]

Oh ok. Just at our school, we didn't have to use sin/cos at all. (for going up/down ramps).

Are you serious? Don't u'z do inclined plane its the components of x and y.
I kind of don't get it still the proof in Physics Contexts 1 using co-ordinate geometry it is weird and assumes a lot of information before proving.

 

[Continuum]

Are you serious? Don't u'z do inclined plane its the components of x and y.
I kind of don't get it still the proof in Physics Contexts 1 using co-ordinate geometry it is weird and assumes a lot of information before proving.

What don't you get? Decomposing a vector into its components is basic trig...

 

[Devouree]

What don't you get? Decomposing a vector into its components is basic trig...

awwww, made me feel so bad about myself now Even though I've bugged friends and even (sometimes) teachers, I've only just started to understand about inclined planes in relation to physics. Decomposing a vector into its components IS indeed basic trig, but this question requires more than that knowledge.