A 2kg object has a position vector r = -4t i + 3t^2 j (m). Find its angular momentum relative to the origin as a function of time.(adsbygoogle = window.adsbygoogle || []).push({});

The correct answer is -24t^2 k (kgm^2/s).

I know that L = r*p and p is mv

so I differentiate r to get v

v = -4 i + 6t j

do I just multiply 2 and the cross proudct of r and v? I don't know what to do because of the t in the equation for vector r.

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# Homework Help: Angular momentum

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