Recent content by jjellybean320

thank you. I understand it so much better now. And you were right, it is about 5.4 cm between the center of rotation and the center of the plate. I simply misread what you wrote.

the center of rotation is about 1 cm from the center of the plate. i looked at the wikipedia page for the parallel axis theorem and it was really confusing. I've only taken ap calculus ab.

http://www.livephysics.com/tables-of-physical-data/mechanical/moment-of-inertia.html the rectangular plate equation on that page is (1/12)*Mass*(a^2+b^2) where a and b are the length and width but this equation is if the axis is through the center. if the axis is at one end like my...

thank you gneill so much!

each blade is approximately 5 inches by 1.25 inches. and it is made from a christmas card.

thank you. i will talk to my physics teacher tomorrow.

if the moment of inertia = m r^2 could i just find the moment of inertia of each of the 3 blades separately and then multiplying by 3? so for example if each blade weighed 2 grams and was 15 cm long (i'm rotating around the end of the blade) then the moment of innertia would be (15^2)*2 would...

do i hang the boomerang at its center with the 3 blades spanning outward? also do you know of a mathematical way i could use to check my moment of inertia value?

can you explain how to find moment of inertia from knowing the center of gravity? I know how to find center of gravity but i don't know how that relates to finding a numerical value for the moment of inertia. and can you explain how i can get a value of moment of inertia through knowing the...

its just 3 rectangular pieces of cardboard pieced together at one end of each piece to make a flat boomerang. each blade of the boomerang is 120 degrees apart. the axis of rotation is through the center of the boomerang

i need to find the moment of inertia for a cardboard boomerang. what equation could i use?

i don't think that would work because i have to devise a boomerang experiment to be done by the rest of the class. so I wouldn't have the time in class to have everyone record the boomerang flight.

if I were to throw a boomerang in an experiment, how would i find the angular velocity? How would i be able to check that my angular velocity is correct?

thanks, i'll look into that.

http://blossoms.mit.edu/video/tan/tan-watch.html I have watched his video. That is the boomerang i intend to make. I want to know the possible calculations I can make with my level of physics understanding (I am an ap physics student).