Calculate the angular momentum of a 81-kg person sitting on the edge of a horizontal rotating platform when the person sits 1.7 m from the center of the platform and has a tangential speed of 3.1 m/s..
Answer

Question

Calculate the angular momentum of a 81-kg person sitting on the edge of a horizontal rotating platform when the person sits 1.7 m from the center of the platform and has a tangential speed of 3.1 m/s..
Answer

amistre64 · Answer

|dw:1330052790786:dw|

amistre64 · Answer

with any luck this is what we are looking to solve

amistre64 · Answer

$$\vec r\ x\ m\vec v$$
maybe if im reading this right

amistre64 · Answer

$$\vec r=<1.7cos(t),1.7sin(t)>,0$$ $$m\vec v = <81(3.1) cos(t),0,0>$$ x r cos(t) m cos(t) x = 0 y r sin(t) 0 -y = 0 z 0 0 z = -r sin(t) m cos(t) i have to read up on this more to see if im doing this right tho

amistre64 · Answer

http://hyperphysics.phy-astr.gsu.edu/hbase/amom.html L = mvr sin(t); or for circular stuff L= mvr

amistre64 · Answer

so i believe thats just multiplying together all your numerical parts

anonymous · Answer

how many significant figures should the answer have

anonymous · Answer

Two.