Physics - Pulley System on a Table (1 of 2) Frictionless Table

This lecture series will cover Newton's Second Law of Physics: F=ma.

In this video, I will demonstrate how this applies a pulley system operating on masses on a frictionless table.

Problem Text:
A frictionless table with a pulley on each end has a 1kg mass placed in the middle. Two strings are attached to each side (of the mass) and hung over a pulley. A 4kg mass is attached to the left string and a 2kg mass is attached to the right string. Find the acceleration.

[malekstudies]

i am a middle school student who is studying in olympiad training to hopefully participate in physics olympiads. i cannot stress how much you helped me and plenty of other students and people as well. Thank you so much! I aspire to be able to teach other people just like you do!

[xhuliomyftari]

I just wanted to say thank you. Your videos are super helpful, keep up with the great work professor.

[atugonzamoses]

I'm in my second year doing Electrical Engineering, here in makerere university, Uganda... Africa, but your lectures have helped me a lot
For me, you're the top/best professor in the world
Stay blessed.

[HowTomin-coni]

Wow! Thank you. You are the main physic online teacher that usually help me out.💞

[benjy]

My left ear is gonna get a 5 on the AP test

[Tinatu]

This video helped me get a 100 percent !! Thank you!!

[kumbu]

Sal Khan at 1:33 would be like "As always I encourage you to pause this video and see if you can figure it out on your own!"

[aidencranwell]

Thank you so much for your help, this really solidified information I was confused on for quite some time.

[sankhasubhraghosh]

Thank you so much am totally doubtless after seeing this solution. Again thank you sir.

[skylertrinbs]

Thank you, professor, this was extremely helpful in clearing up confusion and panic :3

[tolik]

thx a lot!
you solved my exam problems and i am so thankful that i know the concept of spring balance thoroughly!

[vinayagarwal]

Sir i will be thankful of yours if you will upload a video for pulley system in which two pulleys are hanging on a ceiling( also have inertia) and a string goes over them and blocks are hanging over free ends

[Sktheanimefan]

thank you so much i wasnt getting this concept and ur vdo really helped.... thanks a lot

[ftmhaidar]

Hi, I'm doing parachute auto steering for my project and I'm using motor to steer the parachute to the direction I need it to. However I need to find the tension and the force that is required for the strings and the motor to change direction. Could u please help me with this?

[arthurzlol]

my brain was blowing up at this problem, but you saved me

[knowledgeisability]

Hello, thank you very much. Physics is fun with you. Thank you again

[yasirabbas]

thanks I finally understand and at the right timing my exams tomorrow 😊

[adegboyegasamuel]

1:27, 1:28, and 1:29 u said let's assume the pulley has no mass and no friction

Pls I can't picture that

Is there any video solution to a problem where the pulley has a mass

How does it affect the acceleration and the tension in the system

[lorlivingherownlife]

Hi sir! Can you help me out? With a the same given, how do you determine the magnitude of acceleration and direction of a box?

[nofiltariq]

how is T2=(m2*g)-(m*a)?. Shouldn't it be (m2*g)+(m*a) ??. since you assumed positive direction in anti clockwise direction. Thank you