- #1
Thaurron
- 3
- 0
Homework Statement
Actually this is not a problem. This is about something i couldn't understand.
Homework Equations
where wt equals θ
The Attempt at a Solution
I can understand that x=r.cosθ it is obvious. But i can't understand why Vx=-V.sin(w.t) When i take a triangle from that circle i end up finding Vx equal to V.sin(w.t) . Where do we get that minus? Also how does he find the angle as 90+wt in that equation? I think it should be 90 - wt
Note: I don't want the explanation with derivative.