What is Moment of Inertia? (with Practice Problems)

[@MusaSiddique-uz1sq]

Thank you.. This was much cleaner explanation than anything else I found elsewhere

[@danthetutor2624]

Thanks! Glad you liked it.

[@diannazareno1431]

Please make more videos, i love to hear them from you, you're the best one to teach me that from basics

[@danthetutor2624]

Thanks! I really appreciate that.

[@EzeakuPatience]

The moment of inertia when the kid moves towards the pivot point is lower(decrease).
Damn!! I acknowledge ur teaching..

[@snoopiti]

thanks so much, dan! i understood your lessons more than the other videos i've found, will be watching more of your videos for our physics quiz tommorow, this helped me alot 😸

[@danthetutor2624]

That made my day! Thanks!

[@offorchidex5367]

this video was really helpful, cant wait to see more of your videos.

[@danthetutor2624]

Thanks! There’s more to come!

[@myvpn-w9i]

Thank you for sharing your knowledge. Well done video.

[@danthetutor2624]

Thanks! I appreciate it.

[@JamesArmes-uu5ox]

Nice I really learned a lot I have a physic test this mondayw ahwhwhwha

[@danthetutor2624]

That’s good! Good luck on the test

[@fizzhill]

Very useful video. Got a different answer to problem 2 though. Stacking the bars and having a single point of rotation means that it’s off centre on each one and right at the point they both make contact. I then simplify it and consider them as one bar with a mass of 12kg which gives it a higher moment of inertia. What do you think?

[@danthetutor2624]

You're right that making them off center will cause a slight deviation in the moment of inertia (I honestly don't know if that would make it higher or lower). But if you consider them as one bar, you should get the same answer for moment of inertia.

[@danmike2305]

Good physics tutorial.

[@danthetutor2624]

Thanks!

[@brayanmorales9482]

the moment of inertia is going to decrease since the kid is getting closer to the pivot point

[@YngUngi]

thank you for the explanation

[@danthetutor2624]

You’re very welcome!

[@seriouslydontgetmewrong3086]

Decrease because the kid towards the pivot radius decrease.

[@danthetutor2624]

Yep

[@Exceliear]

Was there a reason why we don't consider the rod for the third problem?

[@danthetutor2624]

Yes, because even though the rod has a mass, it is considered negligible compared to the weights at the end. There are other problems where you do consider the rod, but when that happens, they need to give you the mass of the rod.

[@mangoclips5884]

Thanks Dan

[@danthetutor2624]

Any time

[@karessafuentes]

very nice!

[@danthetutor2624]

Thanks!

[@__danmeicoholicxx]

THANK YOU!!!

[@danthetutor2624]

Happy to help!

[@luciddream2033]

A sphere that has a radius of 10 cm with a mass of 100 kg. Damn that is some serious density.

[@danthetutor2624]

How dare you question my fake numbers that I came up with on the spot

[@Victoria-o8t9w]

Thank you

[@danthetutor2624]

No prob

[@LoveJefferyBenson]

The moment of inertia decreases as the kid reduces the radius to the centre

[@danthetutor2624]

Very good!

[@danilsonadelino2091]

The speed would be increasing

[@dianabermejo7502]

thanksss, i have a p6 test todayyhahaha

[@ArtzInfinity.]

thank you!

[@danthetutor2624]

Happy to help!

[@marlenagee427]

Decrease?

[@danthetutor2624]

Yes, correct

[@MickeyEnriquez]

why is your answer 9 kg.ms2 in example 2?

[@danthetutor2624]

Because I plugged those numbers in a calculator.

[@yassientarek8391]

thank youu

[@danthetutor2624]

Youur welcome

[@jackmarshard2083]

Its not the radius of the kid, I dint give that, that would just be rude, 🤣😂

[@Jevil_growtime]

It will decreace

[@jaredc4303]

Decrease

[@danthetutor2624]

Correct!

[@Trendystudio-qn5tb]

The moment of inertia will decrease

[@danthetutor2624]

Correct!

[@itsyaboidazzle]

muwah