- #1
rudransh verma
Gold Member
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- Homework Statement
- Three forces causes a net acceleration of
. Two of the forces and are 10N and 20N. Find the in unit vector notation?
Mass of the body is 2 kg.
- Relevant Equations
x component of
=
y component of
=
And so on…
My question how we can represent it in diagram . I suppose what is : and -30 is measured from position X axis. So what is the component now . Is it now in Forth Quadrant from 3rd.
I can understand the component or in diagram but the above component, I don’t.
I could have done it via reference angle taking a right triangle in each quadrant and taking acute angles and put a sign accordingly to each component after calculating magnitude of each component. But I choose to do it more systematically by textbook way.
I was told you can do it by unit circle convention. That’s what I am aiming for, for doing all the vector questions. Taking all the angles from + direction of x-axis and straight away putting in . In this way I don’t have to worry about the signs. It is dealt automatically.
=
y component of
=
And so on…
My question how we can represent it in diagram
I can understand the component
I could have done it via reference angle taking a right triangle in each quadrant and taking acute angles and put a sign accordingly to each component after calculating magnitude of each component. But I choose to do it more systematically by textbook way.
I was told you can do it by unit circle convention. That’s what I am aiming for, for doing all the vector questions. Taking all the angles from + direction of x-axis and straight away putting in
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