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AP Physics 1 Videos 86 videos

AP Physics 1: 1.4 Waves
181 Views

AP Physics 1: 1.4 Waves. Which of the following is technically true for Max as he stands at the edge of oblivion? 

AP Physics 1: 1.4 Changes and Conservation Laws
177 Views

AP Physics 1: 1.4 Changes and Conservation Laws. Find the current across R2.

AP Physics 1: 2.4 Changes and Conservation Laws
172 Views

AP Physics 1: 2.4 Changes and Conservation Laws. Which of the following circuits should the students use?

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AP Physics 1: 2.1 System Interactions and Changes 199 Views


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Description:

AP Physics 1: 2.1 System Interactions and Changes. What is the total angular momentum of the rod?

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Transcript

00:00

Thank you We sneak and here's your shmoop du jour

00:05

Brought to you by a spinning rod Not impressed Just

00:10

add some sparkles and ribbon and well you've got a

00:12

baton All right check out the following diagram this thing

00:17

chair All right a rod of length L hibbitts around

00:21

its mid point A particle with mass m flies toward

00:25

it Add velocity v and sticks onto the end of

00:28

the rod What is the total angular momenta mb of

00:32

the rod and hear the potential answers a lot of

00:35

forms Okay well we're getting off easy here No need

00:40

to break out super computers to do heavy math We

00:42

just have to know our equations to answer this one

00:45

And since we've been studying day and night cram more

00:48

and more physics in your brain we know that the

00:50

equation for angular momentum is mass times velocity times the

00:54

distance to the center of the revolution In this question

00:59

the length is l but the radial distance is half

01:02

of l since the rod pivots on its mid point

01:05

So putting the variables together we get an equation that

01:08

looks like this The option b is the correct answer

01:11

And any time we want to see physics in motion

01:13

we break out the silver wonder Put on some tunes

01:16

from our favorite marching band And while we become one 00:01:19.57 --> [endTime] with khan

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