নিচের কোন সম্পর্কটি সঠিক নয়?

$\overrightarrow{\mathrm{L}}=\overrightarrow{\mathrm{r}} \times \overrightarrow{\mathrm{P}}$

$\vec{\tau}=\overrightarrow{\mathrm{r}} \times \overrightarrow{\mathrm{F}}$

$\overrightarrow{\mathrm{L}}=\frac{\mathrm{d} \vec{\tau}}{\mathrm{dt}}$

$\overrightarrow{\mathrm{F}}=\frac{\mathrm{d} \overrightarrow{\mathrm{P}}}{\mathrm{dt}}$