Physik M 513.805 (511.015)
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A particle with a mass of $m=$ g moves in a spiral.
The position vector of the particle is,
\(\vec{r}(t)= t\cos (t) \,\hat{x}+t\sin (t)\,\hat{y} \) [m].
What is the force on the particle at a time $t=$ seconds?
\( \vec{F}= \) \( \hat{x}+ \) \( \hat{y} \) [N].