Simple Machines B/Compound Machines C

UTF-8 U+6211 U+662F
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Re: Simple Machines B/Compound Machines C

Postby UTF-8 U+6211 U+662F » April 28th, 2015, 1:19 pm

This is incorrect, Fp can be found, for one thing.
There are two variables though... (and only one equation).

Unless I'm making some stupid mistake (still a little tired after States)

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Re: Simple Machines B/Compound Machines C

Postby plaid suit guy2 » April 28th, 2015, 1:20 pm

There are three equations, each with only one variable
blue and yellow plaid suit
Nationals 2012:
Sound of Music: 8th

Nationals 2013:
Remote Sensing: 1st
ELG: 1st
MagLev: 6th

State 2014:
Boomi: 1st (scored 1824)
Circuits: 1st
Compound: 3rd
Malgev: 1st
MP: 2nd

total gold: 18
total silver: 10
total bronze: 5
6th: 1
Poudre High School class of '15

UTF-8 U+6211 U+662F
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Re: Simple Machines B/Compound Machines C

Postby UTF-8 U+6211 U+662F » April 28th, 2015, 1:38 pm

There are three equations, each with only one variable
I just give up.

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Re: Simple Machines B/Compound Machines C

Postby plaid suit guy2 » April 28th, 2015, 1:42 pm

You sure?
The first problem is this
divcanswer.png
Try the second question.
blue and yellow plaid suit
Nationals 2012:
Sound of Music: 8th

Nationals 2013:
Remote Sensing: 1st
ELG: 1st
MagLev: 6th

State 2014:
Boomi: 1st (scored 1824)
Circuits: 1st
Compound: 3rd
Malgev: 1st
MP: 2nd

total gold: 18
total silver: 10
total bronze: 5
6th: 1
Poudre High School class of '15

UTF-8 U+6211 U+662F
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Posts: 1518
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

Re: Simple Machines B/Compound Machines C

Postby UTF-8 U+6211 U+662F » April 28th, 2015, 2:00 pm

You sure?
The first problem is this
divcanswer.png
Try the second question.
Now I get it. I forgot the part... :oops:
4 kg
except... shouldn't the weight of the lever arm increase as the arm goes further away from the fulcrum?
Last edited by UTF-8 U+6211 U+662F on April 28th, 2015, 4:56 pm, edited 1 time in total.

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Re: Simple Machines B/Compound Machines C

Postby Unome » April 28th, 2015, 3:01 pm

You sure?
The first problem is this
divcanswer.png
Try the second question.
Wait... shouldn't be 10N?
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plaid suit guy2
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Re: Simple Machines B/Compound Machines C

Postby plaid suit guy2 » April 28th, 2015, 3:04 pm

You sure?
The first problem is this
divcanswer.png
Try the second question.
Wait... shouldn't be 10N?
...yes
blue and yellow plaid suit
Nationals 2012:
Sound of Music: 8th

Nationals 2013:
Remote Sensing: 1st
ELG: 1st
MagLev: 6th

State 2014:
Boomi: 1st (scored 1824)
Circuits: 1st
Compound: 3rd
Malgev: 1st
MP: 2nd

total gold: 18
total silver: 10
total bronze: 5
6th: 1
Poudre High School class of '15

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Unome
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Re: Simple Machines B/Compound Machines C

Postby Unome » April 28th, 2015, 3:05 pm

You sure?
The first problem is this
divcanswer.png
Try the second question.
Wait... shouldn't be 10N?
...yes
So ?
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plaid suit guy2
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Re: Simple Machines B/Compound Machines C

Postby plaid suit guy2 » April 28th, 2015, 3:08 pm

It't just ends up as 27.84N (exactly as written on the piece of paper I wrote the solution on last night at like 10:30. Tired me is better as physics, as it turns out :P)

done correctly
divcanswer.png
blue and yellow plaid suit
Nationals 2012:
Sound of Music: 8th

Nationals 2013:
Remote Sensing: 1st
ELG: 1st
MagLev: 6th

State 2014:
Boomi: 1st (scored 1824)
Circuits: 1st
Compound: 3rd
Malgev: 1st
MP: 2nd

total gold: 18
total silver: 10
total bronze: 5
6th: 1
Poudre High School class of '15

User avatar
Unome
Moderator
Moderator
Posts: 4107
Joined: January 26th, 2014, 12:48 pm
Division: Grad
State: GA
Location: somewhere in the sciolyverse

Re: Simple Machines B/Compound Machines C

Postby Unome » April 28th, 2015, 3:14 pm

It't just ends up as 27.84N (exactly as written on the piece of paper I wrote the solution on last night at like 10:30. Tired me is better as physics, as it turns out :P)

done correctly
divcanswer.png
Ohh... I just made a math error, subsequently fixed it to figure out how to solve the problem, then remade the same error while actually calculating the answer...
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Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.


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