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Good problem 👍

I always like the reviews.

love this guy !

HP 48GX calculator spotted!

I put this in python (love doing that), and if alpha is 90, sin(90) = 1 & cos(90) = 0, so you end up with: Fp = mg/(cos(theta) - usin(theta)). I get Fp = 441.6 N. What to make of that?

Great 👍

Nice twist on this one.

Thanks for sharing this 👍

🙌 Thats how it needs to be teach physics

If the internal resistance is used to determine the overall current, then the internal resistance would also need to be used throughout. P = V^2/Rt where Rt = Rbat + Rload = 2.53W. t = E/P = 118.6ks

Never enjoyed these Kirchoff problems. When do you put two (different) batteries in the same circuit?

Super problem 💡

This problem offered you no 'resistance' at all. You used great 'power' in the solving. 😁

Now instead of oscillating over a plane let's apply Lgge. On a circular perpendiculR to blackboard

I'm a new subscriber. I don't know if it concerns you or not but given the numbers of active audience on this channel, I'd like to tell you that people are stupid that's why there are less people like you teaching physics. So please don't ever care about these maniacs watching some speed dating videos, I will be your regular viewer. I'm 22 yo and in love with physics and math Thank you

Question: If you take three values of u (mu) which make acceleration (a) pos, neg and zero. A positive value is when the car is moving up the incline. Negative is when the car is going backwards, and then a = 0.....motionless? If so, can you not have a = 0 and still have motion? No force, no acceleration, but a constant speed and an object moving. How would you tell what a = 0 for this problem?....how would you interpret that? Motionless or moving? If it's moving then what's the difference from u (mu) giving a positive acceleration or acceleration equal to zero?

Brilliant.

halo...why lagrange put this function L=T-U

Thank you for this pb ..really love it.

Nice!

Oooooo....nice FX! I have this in python and was checking on it the other day and wasn't getting the right answer. I checked and checked and re-did the problem several times, and I finally found out if I used tan(x) in the code instead of sin(x)/Cos(x) I got the right answer! Really frustrating. The correct answer was correct to about 2 decimal places, and the 'wrong' one differed into the **tens** place! I'm still unhappy with that.

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Kewl....it would also be a good problem to ask what value of friction would make a = 0. Maybe plot it in python!

Yeah, I get 1470 N as well.

Thanks Dot Physics. This was the best video for me

It’s Euler’s method. You can calculate to see how accurate is, remember that’s a numerical approx.

May try putting this in python and see what it looks like.

I've done this experiment myself. Interesting, but way, way better with python.

So valuable

I like the approach, I bet others will as well. 📏

We need to see how accurate this model is by measuring the actual time it takes for a filter to fall.

Clarification for upward motion. The acceleration has greater magnitude than the result for downward motion, giving the impression that it "accelerates" the object, increasing its speed. However, the vectors acceleration and velocity have opposite directions, so the "acceleration" is really a deceleration. It reduces the speed of the object as it goes up the ramp until it stops (or tips over the top of the ramp).

you neglected friction, if you say two

YOu are the only other person I know who truly wants to learn this subject

Great problem!

Forgot to add 539 to 931, Tension 2 is 1470 N.

You make it look so easy. Great teacher, you should be very proud of yourself. Also this channel is underrated af

These are fun problems....I have this in python, but the way they give the angles makes it troublesome accounting for it in the code.

So glad ive found this channel

Thank u so much

This is the best intro into computational physics I could've asked for! Thank you sir!🙏

The explanation is very harmful for me Thank you 😊

I was so confused when computing the cross product at 4:40, wasted 15 min to go back and review cross products to refresh my memory and yeah it's wrong. Only to find out that he realises it 20 sec after.. should have just continue to watch xD

Ok! Glad this worked out. I figured you were right on what you'd said about the 'differences', but it's always glad to see it too.

This is a very simple circuit diagram. what about a more complex one?

Thank you so much

It will be interesting to see what the issue may be with this.

Are we using Tsiolkovsky's rocket equation?

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Thanks for the analysis, very inspirational to see physics with live examples!