Tension Force Physics Problems 

Is it okay for you to add the full video here too for those who have RU-vid membership?

😌😏

Me too bruh

group project😁

Fr he is the best

Its ok to dream

At least for me, it's all in being able to replay the video and go back if you didn't understand the first time.

I Know EXACTLY why. The reason why online learning seems more effective than traditional classes is because, in school or college, we often find ourselves goofing around with our peers, being too shy or scared to ask back questions or any of our doubts, the lack of revisions after classes, and lacking the necessary attention span. If you start disliking a teacher, your brain just automatically shuts itself up and doesn't bother listening to him/her which creates an endless cycle where you struggle to grasp even basic concepts, despite the teacher's decent lecture. On the other hand, online learning fosters a greater willingness to learn. When you come home and realize there's an upcoming exam, the urgency kicks in. A quick RU-vid search leads you to reliable channels teaching the same concepts taught in school. The key difference lies in the pre-planned and organized nature of online lectures. They are shorter, concise, and to the point. Moreover, your attentiveness is heightened because you know this is your last resort. Your brain becomes more capable of comprehending topics that seemed challenging during in-person classes due to a lack of concentration or fatigue. I am pretty sure, people may find "Organic Chemistry Tutor's" teachings to be more challenging to learn and comprehend at a live-irl-class than on RU-vid. So, the moral of the story is that you should always rely on yourself, in this case, through self-study with a guide, rather than depending solely on others. Actively participating in your own learning allows you to grasp more information. In school, there's often a lack of interest, making it challenging to absorb the material effectively.

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Some teacers even use THIS GUY

@@diags_1109 late reply lol but funny 😂😂

Fr

He used to have an old channel where he taught speed cubing (Rubics cubes)

@@afridnishad6617 wait! Really ?

@@kh4art35 his channel name badmephisto

@@afridnishad6617 lmao how did u find it out

@@peng8151 I used to follow him back then, when he was working at google deep learn and teaching cube. I wonder where he works now

How was the exam

Late answer, but here's the explanation: It's because on 0:57 he set the sum of the forces to be ΣF = T - W, so he already put the minus sign here on the weight force where gravity is. You could set it to be ΣF = T + W, so it would be ΣF = T + (50 * (-9.8))N, as adding a negative number is the same as subtracting, the result would be the same.

yes i was thinking that too. It confused me to get 275 for the tension because then the box would not be lifted. I don't understand why he added the accelerations together for 1a and then subtracted the accelerations for 1b if both the accelerations in b are going in the same direction ?

The acceleration is 9.8 due to gravity. Upward acceleration will be -9.8 because it is going against the gravity.

good luck!

@@nafsii04 thanks

Chai

yeah if you use gravity which goes down as a positive vector then he should have done 9.8-2.3 in the first example

No u

Assuming the block starts from rest (u=0), there's no air resistance. m = 500 kg s = 3m v = 3m/10hr s = vt t = s/v = 3 × 10/3 = 36000 s s= ut + at² a = s/t² = 3/36000² m/s² F = ma = 500 × 3/36000² (Downward force needs to be 500 × 3/36000² N) W = mg = 500 × 10 = 500 × 3/36000² -Fnet = T - W T = -Fnet + W = -500 × 3/36000² + 5000 N If you pull the block with this force, you'll get your desired result.