Newton's 2nd Law Problem: Three Blocks and 2 Strings

Physics Ninja looks at a Newton's 2nd law problem where 3 blocks are connected by 2 strings. Two of the blocks are suspended and one block slides on the table. There is friction between the block and the table.
I look at the free body diagrams and write down Newton's 2nd law for each block. I then solve for the acceleration of the blocks and the Tension in each string.

[valleferrer]

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[brayanmorales]

I'm getting ready for my physics test next week and i think this is a good example on how to work with netwon's second law. Thank you!!!

[sofyakrasikova]

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[mangotreat]

I think you are my saving grace, im currently in physics 20 ang had no clue how to do this but after this I knew how to this!! I think I'll be able to pass this class!

[samarthkulkarni]

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[Odenoyecaleb]

Wow
Physics Ninja you really break this down to my understanding 🤗
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[MhocisID]

Thank you for this. I really enjoyed following!

[anna-mariya]

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[atreefrienship]

Do you have more problems like this? Thank you

[User-hzvz]

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[kalkidangete]

why we take the kinetic friction to the right ?why it isn't to the left ?

[majwin-]

Quick question,
Why is the acceleration always assumed to be the same for all three bodies. I mean the other two mass are just hanging and have no friction, but block 2 is moving on a surface that has friction to oppose it's motion, so how does it have the same acceleration with the rest of the 2 masses

[haleyhyatt]

Why is T1 not equal to T2? I thought that tension along a cord is always constant/equal?

[SirThorp]

I have a problem that included values for both static and kinetic friction. How would I implement the static friction into the problem? Thank you.

[hooberdoober]

Use the Lagrangian. Easier. Faster. Unlike humans, Mother Nature wastes no efforts.