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System Interactions and Changes Videos 15 videos
We wouldn't give away the answer to this AP Physics question, not for all the joules in the crown. Come back when you've got some actual jewels. Th...
AP Physics 1: 1.2 System Interactions and Changes. What is the total mechanical energy of the system?
AP Physics 1: 1.4 System Interactions and Changes. What is the change in linear momentum?
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?
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
Full Transcript
- 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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