WAEC GCE 2023/2024 PHYSICS MECHANICS ALTERNATIVE TO PRACTICAL (PREPARATION class)| A1 assured.

[@PreciousTyende]

Learnt a lot

[@PhysicsWithBen]

Glad you did!

[@PreciousTyende]

But the slope for the mechanic alternative that you did is 1.875 and not 0.1875 because it is 15/8

[@henryosuya6842]

Excellent teaching sir. Good job

[@cynthianchika]

Wehdon sir. You did a great job. Excellent teacher you're. Clear video and straight to the point. Many thanks.

[@PhysicsWithBen]

Oh! Thanks for your generous words. Wish you success in your Physics Examinations God bless you.🙌.

[@Fatiimahhh]

thank you sir. i have a question. for the b part of the question when you're calculating the mass of the meter rule how did you know that the length was 100cm?

[@PhysicsWithBen]

@@Fatiimahhh When you hear of see it written; a uniform meter rule, it means 100cm. For 1 m = 100 cm. Thanks .

[@Fatiimahhh]

@@PhysicsWithBen ohh okay. Thanks sir

[@edesirienovwo6061]

Well delivered tutorials. How do I get your book, Master Practical Physics by Chris U. Ugenyi and IEC Team?

[@PhysicsWithBen]

Oh, thanks very much, Sir. The phone number is on the cover 📔 of the book 📖 you saw in the video. You can also visit any standard bookstore and get it there. I am very sorry for replying you this late. Thank you.

[@userAyib025]

Thank you very much sir but the calculation of the slope was not correct sir It is 1.875

[@cr7fannboiironaldo180]

Sir it says the pivot was placed 20 cm *from* the centre of gravity. That means that the distance between the centre of gravity and the pivot is 20cm and due to the centre of gravity being at the 50cm mark, that means that the pivot was placed at 50-20= 30cm mark

[@jordanugoeke9034]

Thank you for the awesome lesson. Really enjoy your videos because you make them easy to understand. I have a question concerning the “real values” for L: I was thinking it should be the L(con) values, being that L(con) values are what would’ve been recorded on the meter rule in the lab. Because I observed that the Li values were obtained from the question paper and each cm represents 5cm in real scale. Please help me clarify this. Thank you.

[@PhysicsWithBen]

Thanks, @Jordan Ugoeke for your critical observations. This shows you are sound in Physics. I had to re-watch the video to verify if that was an error from me. Fortunately, it is not. The instructions said, plot a graph with real values of L, not L(convert). One thing I will like you to know in physics practical is this-"you follow STRICTLY the instructions given to you, even if you already know it". I hope this answers your question. Thanks.

[@constanceeneye2730]

​@@PhysicsWithBenits l con not l think about it

[@KosisochukwuEsomchi-l7q]

You didn't use the value you recorded on d, horizontal.even while reading the slope, you are reading what you didn't record as each unit value.

[@bennypolllo]

The correct scale sir is 4cm to 10 units And 4cm to 2unit

[@PhysicsWithBen]

Good day, thanks for your opinions. But I think we don't have a fixed scale for a particular graph. There is always more than one correct scale for every Physics graph, and you are at liberty to choose the one that works best for you. If 4cm to 10 units/2 units works best for you, that is cool. As a Physicist, I expected you to say, Sir, you can also use 4cm to 10 units and 4cm to 2 units. Thanks for finding my videos worthy of watching. God bless you.

[@bennypolllo]

Your videos are amazing and well explanatory, sorry for speaking out of foolishness 😅

[@PhysicsWithBen]

Good day, you did not speak out of foolishness but with great sense. The only challenge I had about your comment was that you it did not give room for other scales and units of the graph. I welcome corrections because they help me grow. God bless you.

[@adeniyiadeposi2534]

Please how did you get 120 when solving for the mass of the ruler

[@lillyayonifunmi]

Pls sir,I don't understand how predicted the type of graph we are going to have. Can you please explain? Thank you sir.

[@PhysicsWithBen]

Hello 👋, In every experiment, there is what we call THE TREND OF THE EXPERIMENT ( i. e the mathematical relationship the variables or the parameters in the experiment share with each other). If you perform a physics experiment ( e.g the simple pendulum experiment) you will find out that among these variables ( length of the thread 🧵, l, time of oscillation,t, period of oscillation, T, etc), the length, l, of the thread and the period, T, of the oscillation has an INCREASE -INCREASE OR DECREASE-DECREASE RELATIONSHIP(trend). Meaning that, as the values of the independent variable, l, are increasing down the table, the values of the dependent variable, T, will also be increasing down the table and vice versa. Prediction:👇 As a result of the above, if you are asked to plot a graph 📉 of l vs T or T vs l, you must have any of these three possible positive straight-line graphs. 1. A graph sloping upward from left to right with an intercept on the positive y-axis. y = mx + c 2. A graph sloping upward from the origin to the right with NO intercept. y = mx 3. A graph sloping from down upward with an intercept on the negative y-axis and positive x-axis. y = mx + or - c. I have explained this in all my experimental videos. Check out for increase - decrease or decrease - increase trends. I hope this information is helpful. Thank you.

[@lillyayonifunmi]

@@PhysicsWithBen Yes sir. Thank you.

[@PhysicsWithBen]

@user-du3fi6oz1k You are most welcome.

[@pauljayeola2786]

Sir where is D

[@PhysicsWithBen]

Sorry, I don't understand your question. Can you make it clear please 🙏.

[@pauljayeola2786]

@@PhysicsWithBen Sir ,the length d

[@samuelshonubi4087]

sorry 15 \8 is equal to 1.875 not 0,1875

[@PhysicsWithBen]

@Samuel Shonubi. Thanks for the critical observation. It means you watch the video with much attention. That should be a sleep of hand 👏 from me. Sorry about this.

[@__Royhannah]

Sir 15/8= 1.875 not 0.1875

[@pkennyA1]

Is it not wrong to use a pen for drawing of graph?

[@PhysicsWithBen]

It is wrong to use pen ✒️ drawing... I even said it in this video and also the reason why I am using a pen. The pencil will not make you see it very clearly and that is why I used a pen. I hope this answers your questions. Thanks.

[@Chidinma-l5h]

Sir, where did u get the 20 from ??

[@adebayoolajide3340]

Good evening sir, My name is Adebayo. Please how can I get this practical textbook

[@PhysicsWithBen]

@Adebayo, you may screen shot a section of the video that has the book. Take it to a standard book shop, and you will find a copy of it there to buy. I hope this answers your question? Don't forget to subscribe and promote Physics With Ben. God bless 🙌 you.

[@adebayoolajide3340]

Yes sir it did

[@mirabelfortunatus]

You can buy it in the market. I bought mine there. Hope this helps 😊.

[@victorianwabueze6982]

I thought calculated values are to 3dp

[@adeniyiadeposi2534]

Sir how do you know your intercept

[@HikmahIsmail-e2g]

The value of the slope is meant to be 1.875 and not 0.1875. Thanks

[@PhysicsWithBen]

Thanks for your critical observation, that was an error from my end, and i apologize for that. It shows you watched every second of the video with interest and attention. I want to believe the content was very useful to you!

[@HikmahIsmail-e2g]

@@PhysicsWithBen Sure sir

[@egunjobitimileyin9585]

Sir the slope is 1.875 not 0.1875

[@PhysicsWithBen]

Thanks for your observations. That was a mistake.

[@ogechialabi2266]

thanks for the lesson sir, but sir the video wasn't that clear

[@PhysicsWithBen]

Sorry for the inconvenience. It is clear when the network connection is very strong 💪.

[@ChiazokamAnyahara]

Excuse me sir you said 2cm to 2unit but you did 4cm to 2unit

[@NarutoUzumaki-je7qr]

really

[@SirniceConcept]

Your slop is not correct sir

[@PhysicsWithBen]

@@SirniceConcept what is wrong with the slope Sir? I would love to know. Thanks