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PhunScience
เข้าร่วมเมื่อ 1 ส.ค. 2011
วีดีโอ
Static Equilibrium
มุมมอง 274K12 ปีที่แล้ว
Introduction to Static Equilibrium "Hanging Problems" Details how to solve the problem when the tension in the two cables are unknown. The basic approach can be used to solve any of these types of prolbems.
Entering Scottsville, VA from Rt. 20, Charlottesville.
มุมมอง 1.7K13 ปีที่แล้ว
A little blurry. Shows entering Scottsville, VA on route 20 coming from Charlottesville.
Entering Scottsville, VA from Buckingham
มุมมอง 88513 ปีที่แล้ว
Video of going over the James River into the town of Scottsville, VA
Adding Vectors: How to Find the Resultant of Three or More Vectors
มุมมอง 944K13 ปีที่แล้ว
I review how to find the resultant graphically and then show how to do it algebraically. Suitable for high school physics.
I loved this video
Great explanation, thank you.
It’s 2024 nd a 13y old video is still useful
I guess physics hasn't changed much. haha Just play it at 1.5+ though, I've retired since then, too.🤪
Thank you so much! This helped, as my teacher didn’t explain this.
You don't explain it clearly. It's frustrating
I'm sorry this video didn't help you. I hope you find a source that will ease your frustration.
This is GOLD, thanks for explaining this
I am very thankful to you and I owe you this!!!
This is an excellent or outstanding video. Even I was stuck at this for a very long time. I searched internet for a very long time but now it is more than crystal clear 🔮. Thank you sir.
Moreover Instructor definitely affords us his salvation. Thank you Sir
Instructor helps one to see a steeper angle on one of the cables bearing the weight means this cable needs to be stronger strand wise since it will carry more of the twelve Kilograms. Hopefully this analysis is correct.
Out of the 7 videos I watched about addition of vectors, this is the most helpful one. And oh, out of the 7 this is also the oldest video. Now I understand adding vectors fully. I'll be taking an exam tomorrow. This was very helpful so thank you thank you
Thank you for your feedback. Its hard to believe that a simple video I made for my students 11 years ago has been so helpful for thousands of physics students like yourself. I've been retired for 3 years now but still enjoy hearing from you all.
Thanks this video was really helpful. I now understand 😊
this is very useful
this just shows how easy vectors are, but of course we have profs who does not want to properly discuss and explain it in simple terms. Thanks!
A bump car moves 5m to the east before moving 7m at an angle of 60° north od west. It then followed another track 10 m heading to 25° south of west. What is the displacement of the bump car?
The 3 movements of the car represent 3 vectors. Draw them individually from the origin, on the X-Y axis, then follow the video starting at 5:30. Vector 1 on the +X axis out to 5. Vector 2 extends into quadrant 2 (N of W), 60 deg above the -X axis 7 units. Vector 3 extends into quadrant 3 (S of W), 25 deg below the -X axis, 10 units. The rest is on you. :)
Thanks! This was great!
This vid was made in 2012 but the 10y ago really got me 💀
and...I've retired but still read your comments. Thanks for watching!🌞
Excellent. Thank you.
in the way you cleared this concept was amazing i can never forget now thank you so much for making vector addition of multiple vectors easier for me
Thank you much 🖤 This is the most easiest method to understand Thaaaaaaaank you
Can you get a negative degree? Or do we turn it into a positive one?
The sign of the components should reflect the quadrant in which they lie. If you get a negative degree, then my first guess is that your calculator is in the 'radians' mode. Make sure it is in 'degree' mode. :)
I think the teachers should watch these videos. I must admit that as a teacher, I am learning a lot from other teachers online. Good presentation sir.
Hi , Can you help me how did it become 29.5°? I couldn't understand it
Great content and well explained lecture ! Keep up the great work !!
Thank you for this video
How did he got 67.8 and 38.3
Go to 7:36 in the video. 67.8 is just the sum of all the X components...see the equation. 38.3 is the sum of all Y's. If you have trouble determining the components, go to 12:18 of the video and watch how the components are determined using trigonometry. - Phun
NICE VIDEOOO HELP ME ALOT THANKS YOUUUU
thank you so much for this! so clearly explained for those of us struggling to understand the concept of adding vectors
I've been looking up how much of a refund I could get from dropping college physics. This explains so much better than my teacher.
Excellent
I never tought a 10 years old video could be this useful
Its a timeless classic!
Watching it after 10 years😅😅😅
Thank you! I’m amazed at how many people this has helped! I retired last year, too.😀
thank you so much!! but quick question, can a resultant be negative?
The way I’ve taught it, no. Look at the equation, the resultant will be positive.
Don't be sorry about TH-cam ads; it's how we can help you, sir.
Love you Herr professor
How can we have 20° in the 4th quadrant where you not suppose to subtract 360-20 to get that angle
Yes, I guess that is the proper way to do it but I like to keep things simple for my high school students (now retired) and have them use the angle as shown and then place the negative sign where required.
Thank you, still relevant in 2021
Thanks... physics doesn't change much....but I retired last year.
thaaaank you
Thanks sir
how do you find the direction of the resultant net force?
Asalah Muhammad the best way is to sketch it out so you can visualize it. Just take the “sum of the Xs and sum of the Ys” and put them on a x,y plane. Observe the purple vectors in my example.
You are very awesome! 😁👌
That's unbelievable idk how i magically understand everything now
I think that you did an incredible job thank you very much
I think I am leaving school and saving money these youtube teachers waayyyyyyyyy better than school teachers
I want to ask how do you find which direction of the resultant vector if it was north of east or east of north or whatsoever?
Arian Bernadette Concha The +X axis is East and the +Y axis is North, so in this case the resultant is North of East. In other words, you begin on the +X axis and move North. If you’re not sure, you could always state “29.5 degrees above the +X axis” like I show in the video . You’re instructor may have a preferred method for you to use.
its 2020 and this is still helping thank you sir
Its 2020, who still here bcs of Online class?
Was on the verge of crying because I didn't know how to solve this because I couldn't understand what my teacher was saying (online class) but I'm glad I found this video. Thank you so much!
@Luke Posner nah
I feel you, man or woman.
nerd
Great explanation.
Pano naging 77.9 ? Kasi lumabas sakin 1534.64
Actually, you may have misused the calculator. If I do 67.8 + 38.3^2 I get 1534.69! You must do 67.8^2 + 38.3^2 and then take the square root of that.
At the start, it sounded like an intro of a dream minecraft video