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Class 11 physics
First year physics
First year physics
Category
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LearningTranscript
00:05Assalamualaikum dear viewers and students, dear students,
00:09आज हम unit number two का जो second topic है,
00:13addition of vectors by head to tail rule means graphical method of vector addition study करेंगे.
00:23So, addition of vectors by head to tail rule को कैसे define करेंगे?
00:30Okay, it is a graphical method in which two
00:53or more vectors are added in such a way that
01:15height of first vector is joined with the tail of second vector.
01:49The tail of third vector is joined with the tail of third vector.
02:07And so on, finally the head of resultant is joined
02:34with the head of last vector and its tail is joined
02:54with the tail of first vector.
03:07means head to tail rule के मताबक जब हम दो या दो से ज्यादा वेक्टर्स को एड करेंगे ग्राफिकल,
03:15क्योंकि एड़िकल मेतर्स यह जो है जो है एक ग्राफिकल मेताब होता है, इनमें हम दो या दो से ज्यादा
03:24वेक्टर्स याने सिंती मिक्दारों को कैसे एड करते हैं?
03:27we add two or more vectors in such a way that head of first vector, जो पहला वेक्टर होता है,
03:36उसके head के साथ हम जोइन करेंगे with the tail of second vector, means second vector का tail जोइन करेंगे
03:44उसके head के साथ, and head of second vector is joined with the tail of third vector, और second vector
03:51के head से third vector का tail हम एड करेंगे,
03:54ऐसे ही process जो हमारा वो continue रहेगा for more than two vectors, finally, जब हम resultant find करेंगे, resultant
04:05vector मालुम करेंगे, तो resultant का जो tail होगा, वो हम first vector के tail से join करेंगे, और resultant
04:13का जो head होगा, वो हम last vector के head से join करवाएंगे,
04:20so this is the statement of head to tail rule, अब हम head to tail rule की मदद से add
04:29करना सिखेंगे, किसे दो या दो से ज्यादा सिम्ती मिकदारों को according to head to tail rule हम add करते
04:36हैं,
04:37एक और बात, जब हम head to tail rule के मताबक vectors को add करेंगे,
04:45so, दो जो चीज़े हैं, वो हमें require होंगी, which are,
04:52number one suitable scale and second is direction indicator,
05:10जब हम दो या दो से ज्यादा vectors को head to tail rule के मताबक add करेंगे,
05:15तो ये दो चीज़े हमें इनकी जरूरत पड़ेगी,
05:20ठीके, अब हम एक example लेते हैं,
05:25for example,
05:33a man
05:37covers
05:405 km
05:41m metres
05:46displacements
05:50towards
05:54west
05:57from point
06:00a to b
06:05then
06:07hece
06:08Damn
06:16And covers 3 kilometer displacement towards north
06:40And reaches 8 point C
06:48एक हम एक्जम्पल ले रहे हैं कि एक आदमी है जो 5 kilometer displacement कवर का राया
06:53towards west from point A to B
06:56A point से B point तक
07:00जब वो B point पे पहुंचता है तो बहां से वो turn करता है
07:04and covers 3 kilometer displacement towards north
07:07और वहां से वो 3 kilometer displacement मजीद कवर करता है towards north
07:14means small की तरफ जो है वो 3 kilometer displacement कवर कर रहा है
07:19and reaches point C
07:21वो point C पर reach करता है
07:24तो अब हम उसका जो resultant है वो find करेंगे
07:29और angle means direction भी find करेंगे
07:32so resultant भी find करेंगे और उसका
07:37find its net displacement
07:45उसका net displacement find करेंगे
07:48and also direction
07:57और किस direction में means कि सिम्त में उसने ये displacement net displacement कवर किया है वो भी हम find
08:04करेंगे
08:04अब हम इसको add करने से पहले दो चीज़ेंगे एक suitable skill और दूसरा direction indicator
08:12तो suitable skill क्यों हम लेते हैं क्योंकि ये देखें ये जो displacement से या कोई भी value हमें
08:22किलो मीटर्स में आप्टेंड होता है या फिर मीटर्स में आप्टेंड होता है तो पेज पर हम जो हैं वो
08:29किलो मीटर्स तो draw नहीं कर सकते हैं
08:33ایک ویلیو کو سپوز کرتے ہیں
08:35کہ بھائی یہ اس کے ہم ایکیون لیتے ہیں
08:37اس کو ڈراغ کرنے کے پرپس
08:39کے لیے پیج پر ڈراغ کرنے کے لیے
08:41لیکن ایکچولی وہ ویلیو
08:43اس کے ایکیون نہیں ہوتا
08:44تو سویٹیبل سکل لیں گے
08:52اب سویٹیبل سکل میں کیا کریں گے ہم سپوز کریں گے
08:55سپوز
09:00ہم لے رہے ہیں کہ
09:01ون کلومیٹر
09:03is equal to
09:05ون سینٹی میٹر
09:06یہ ایکچولی اس کے ایکیون نہیں ہوتا
09:08لیکن ہم اس کو ڈراغ کرنے کے پرپس
09:11سے ہم کیا کر رہے ہیں
09:13کہ ایک سویٹیبل سکل لے رہے ہیں
09:15ہم اس کو سپوز کر رہے ہیں
09:17کہ سپوز ون کلومیٹر is equal to
09:19ون سینٹی میٹر
09:20تو 3 کلومیٹر will be equal to
09:273 سینٹی میٹر
09:28and 5 کلومیٹر
09:59will be equal to
10:00north this is south
10:02this is east and this is west
10:08تو یہ جو ہے ہمارا کیا ہے
10:11اس کو ہم شمال کہتے ہیں
10:19یہ شمال ہے
10:20اور یہ
10:21south south کو ہم کیا کہتے ہیں
10:24جنوب
10:26اور east کو ہم کیا کہتے ہیں
10:32مشرق
10:33west کو ہم کیا کہتے ہیں
10:37مغرب
10:38تو اب ہم نے یہ
10:40direction indicator لیا
10:41اب ہم اس کی مدد سے
10:43ان کو ہم ڈراغ کریں گے
10:46but کونسی مدد سے
10:48یا کس کی مدد سے
10:49ڈراغ کریں گے
10:50کونسی method سے
10:51by head to tell you
10:52head to tell you
10:53کی مدد سے
10:54ہم ان کو
10:54add کریں گے
10:55دیکھیں یہ رہا ہے کہ
10:58اب main covers
10:595 km displacement
11:01towards
11:02west
11:04means
11:05مغرب کی طرف
11:07جو ہے وہ
11:07displacement
11:08cover کر رہا ہے
11:095 km کا
11:11from point A to B
11:12and then
11:13he turns
11:14and covers
11:153 km displacement
11:16towards north
11:19and reaches point C
11:21so
11:22جب point B پر
11:23وہ پہنچتا ہے
11:24تو وہ وہ
11:25سے turn کرتا ہے
11:26اور
11:273 km displacement
11:29cover کر رہا ہے
11:30کہاں
11:31towards north
11:32means
11:32شمال کی
11:33جانب
11:33cover کر رہا ہے
11:343 km
11:35so
11:36ہمیں کیا
11:37find کرنا ہے
11:38we have to find
11:38its net displacement
11:39and
11:40also
11:41direction
11:42so
11:45suitable
11:45بھی
11:46scale
11:46ہم نے
11:46لے لیا
11:47direction
11:47indicator
11:48بھی
11:48اب ہم اس کو
11:49add کریں گے
11:50اب ہم ان کو
11:51add کریں گے
11:52according to
11:53head to tell you
11:53so
11:54سب سے پہلے
11:55ہم کون سی
11:55line
11:55draw کریں گے
11:565 km کی
11:58towards west
11:59west کی
11:59جانب
12:00کیونکہ وہ
12:01west کی
12:02جانب
12:02move
12:02کر رہا ہے
12:03from point A
12:04to B
12:04تو west
12:05west کا
12:05direction
12:06کہاں پر ہے
12:06اس پہ
12:07رکھ
12:08تو
12:08اس کو
12:09ہم کیسے
12:10draw کریں گے
12:12ایسے
12:13اس کو
12:13draw کریں گے
12:14take a
12:14suppose
12:14this is
12:155 km
12:16کو
12:17ہم نے
12:17suppose
12:17کیا ہے
12:185 km
12:18is equal
12:19to 5 cm
12:20تو 5 cm کی
12:21یہ line
12:22ہم نے
12:23draw کی ہے
12:23so this point
12:25is A
12:25and this point
12:26is B
12:28so
12:29جب وہ
12:30B point
12:30پر پہنچ
12:31رہا ہے
12:31تو وہاں
12:32سے وہ
12:32turn کر رہا ہے
12:33اور
12:343 km
12:35displacement
12:35cover کر رہا ہے
12:36towards north
12:37means
12:38شمال کی
12:39جانب
12:39so
12:40اب
12:40ہم
12:40یہاں
12:41سے
12:41draw کریں گے
12:433 cm
12:44کی
12:44line
12:44کیونکہ
12:45ہم نے
12:46پڑھا ہے
12:46کہ
12:47head to tell
12:47rule
12:48میں
12:48کہ
12:48first
12:48vector
12:49کے
12:49head
12:49سے
12:50second
12:51vector
12:51کا
12:51tail
12:52join
12:52کرائیں گے
12:53so
12:54first
12:55vector
12:55یہ
12:55ہمارا
12:56second
12:56vector
12:57ہم
12:57draw
12:57کریں گے
12:58کہ
12:58اس کا
12:58tail
12:59first
13:00vector
13:00کے
13:00head
13:01سے
13:01join
13:01کروائیں گے
13:05so
13:06this
13:06is
13:07second
13:07vector
13:08which
13:09is
13:103 cm
13:13towards
13:14north
13:14north
13:15کی
13:15جانب
13:16ہم
13:16نے
13:16یہ
13:17line
13:17draw
13:17کی
13:17ہے
13:18so
13:18this
13:19point
13:20is
13:20c
13:20اس
13:21کو
13:21ہم
13:21c
13:21points
13:22کہ
13:22رہے ہیں
13:25اب
13:26resultant
13:26resultant
13:27کیسے
13:27معلوم
13:28کریں گے
13:28resultant
13:29کے
13:29لیے
13:30کیا
13:30کریں گے
13:30ہم
13:31لکھا
13:31کہ
13:32finally
13:32the
13:32head
13:33of
13:34resultant
13:34is
13:35joined
13:35with
13:35the
13:35head
13:36of
13:37last
13:37vector
13:38جو
13:39last
13:39vector
13:39ہم
13:39نے
13:40draw
13:40کیا
13:40ہے
13:40اس
13:40کے
13:41head
13:41سے
13:41resultant
13:41کا
13:42head
13:42ملائیں گے
13:43and
13:44its
13:44tail
13:44is
13:45joined
13:45with
13:45the
13:45tail
13:46of
13:46first
13:46vector
13:46یا
13:47جو
13:47first
13:47vector
13:47ہم
13:48نے
13:48join
13:48کیا
13:48دا
13:48resultant
13:49کا
13:50tail
13:50جو
13:50ہے
13:50اس
13:51کے
13:51first
13:51vector
13:51کے
13:52tail
13:52سے
13:52join
13:52کریں گے
14:02یہ
14:03ہمارا
14:03resultant
14:04ہے
14:04so
14:05this
14:05is
14:06d1
14:06and
14:07this
14:08is
14:08d2
14:08یہ
14:09displacement
14:091
14:09ہے
14:10from
14:10a
14:10to
14:10b
14:11اور
14:11b
14:11to
14:12c
14:12displacement
14:122
14:13ہے
14:13so
14:14net
14:14displacement
14:15means
14:15resultant
14:16ہمیں
14:17کیا
14:17کرنا
14:18ہے
14:18find
14:18کرنا
14:18ہے
14:19اور
14:19we
14:20have
14:20to
14:20find
14:21this
14:22angle
14:22direction
14:23بھی
14:24ہمیں
14:24calculate
14:25کرنا
14:25ہے
14:26so
14:27سب
14:27سے
14:27پہلے
14:28ہم
14:28کیا
14:29کریں گے
14:29net
14:30displacement
14:31find
14:31کرنے
14:31کے
14:32لئے
14:32ہم
14:32Pythagoras
14:33theorem
14:33use
14:33کریں گے
14:35by
14:35using
14:45Pythagoras
14:46theorem
14:53Pythagoras
14:53theorem
14:54use
14:54کریں گے
14:55Pythagoras
14:56theorem
14:58is
14:59equal
14:59to
15:01hypotenuse
15:02ka
15:03squares
15:04is
15:04equal
15:05to
15:05base
15:06square
15:06plus
15:07perpendicular
15:08square
15:08so
15:09یہ
15:09square
15:10ختم
15:11کریں گے
15:11یہاں
15:12پر
15:12لے کے
15:12جائیں گے
15:13تو یہ
15:13under root
15:13آ جائے گا
15:14so
15:14this
15:15will
15:15be
15:15h
15:16is
15:16equal
15:16to
15:16under
15:17root
15:17base
15:18square
15:19plus
15:19perpendicular
15:20square
15:21so
15:22یہاں
15:22پر
15:22base
15:24کون
15:24سا
15:24d1
15:26is
15:26base
15:26and
15:27d2
15:27is
15:27perpendicular
15:28and
15:29d
15:29is
15:29hypotenuse
15:31and
15:32d
15:32is
15:32hypotenuse
15:33so
15:34hypotenuse
15:36means
15:36d
15:38so
15:39d
15:39will
15:40be
15:40equal
15:40to
15:41under
15:41roots
15:43base
15:44kya
15:44d1
15:45so
15:46base
15:46ka
15:46square
15:47to
15:47d1
15:47ka
15:47square
15:48plus
15:48perpendicular
15:49d2
15:51perpendicular
15:52ka
15:52square
15:52to
15:52d2
15:53ka
15:53square
15:53so
15:54d
15:55will
15:55be
15:55equal
15:55to
15:57d1
15:57ka
15:58value
15:58a
15:585
16:00so
16:015
16:01ka
16:01square
16:02plus
16:02d2
16:03ka
16:03value
16:043
16:04so
16:043
16:04ka
16:05whole
16:06square
16:06so
16:07d
16:07will
16:07be
16:07obtained
16:08is
16:09the
16:10square
16:10of
16:105
16:10is
16:1125
16:11so
16:12the
16:13square
16:13of
16:133
16:14is
16:159
16:18so
16:18d
16:19will
16:19be
16:19obtained
16:20as
16:20means
16:21net
16:21displacement
16:22will
16:22be
16:22obtained
16:23as
16:2625
16:27plus
16:279
16:28it
16:28will
16:28be
16:28under
16:28root
16:3034
16:33centimeter
16:34here
16:35net
16:35displacement
16:36we
16:36obtained
16:37under
16:3734
16:38centimeter
16:39above
16:40miss
16:40car
16:40jab
16:41square
16:41root
16:41khatam
16:42kar
16:42vayenge
16:42for the
16:44square
16:44root
16:44of
16:4534
16:45is
16:485.83
16:54centimeter
16:55so
16:56so
16:56jab
16:56him
16:57is
16:58convert
16:58here
16:591
16:59centimeter
16:59we
17:00have
17:011
17:01centimeter
17:02so
17:035.8
17:05centimeter
17:05we
17:06have
17:06to
17:06look
17:07this is
17:095.83
17:10kilometer
17:12so
17:12net
17:13displacement
17:13we
17:15have
17:15obtained
17:16the net
17:17displacement
17:17is
17:185.83
17:19kilometer
17:20here
17:21net
17:21displacement
17:22cover
17:22is
17:235.83
17:28kilometer
17:29means
17:30here
17:31we
17:31centimeters
17:32we
17:32have
17:32say
17:33centimeters
17:33we
17:34have
17:34to
17:35say
17:355.83
17:37kilometer
17:37net
17:38displacement
17:39cover
17:40so
17:42now
17:43finally
17:44we
17:44find
17:45this
17:45direction
17:46we
17:47can
17:47करेंगे कि कौन से डारेक्शन में इसने यह जो नेट डिस्प्लेश्मेंट कवर कराए गोर्म फाइंड करेंगे
17:57नौव पार्ज डारेक्शन
18:07मेंस एंगिल
18:11अब यह हम एंगिल थीटा फाइंड करेंगे
18:15इसको कैसे find करेंगे
18:18vising tangent ratio एस tan theta
18:21is equal to perpendicular upon base
18:25tan theta किसके equal होती है
18:27perpendicular upon base के
18:29so we have to find theta
18:30so this will become as
18:33theta will be equal to tan inverse
18:37perpendicular upon base
18:39so theta will be equal to
18:42tan inverse
18:45perpendicular means d2
18:49or base kya ahe d1
18:53so d2 ka value kya ahe
18:563
18:56so 3 divided by d1
19:00the value of d1 is 5
19:02so theta will be obtained is 10 inverse
19:063 divided by 5
19:08it will be
19:110.6
19:1410 inverse 0.6
19:1610 inverse 0.6
19:20the value of 10 inverse
19:210.6
19:25will be
19:2930.96 degrees
19:32this ko am round off
19:34karke
19:3831 degrees
19:40bhi
19:41licks sakti hain so angle
19:43kitni obtained hui hain
19:4431 degrees
19:45so dekhi
19:47yaha par 0
19:4990
19:52180
19:53270
19:55so 0 degree se
19:57so 0 degree se angle
19:57yaha shuru hooti hai
19:580 degree 1
19:5923 upto
20:0090 degrees
20:0290 degrees se upto
20:04180
20:04180 se
20:05270
20:06so
20:07koansi angle
20:08hume hain
20:09obtained hui hai
20:1031
20:10so 31
20:11so 31 ka matlab hai ke
20:12iska direction jo hooga
20:14yahi kai hooga
20:18for example this is a 31 degrees
20:20so the direction will be between north and west
20:26means it covers total displacement towards north west
20:32means shumal maghrib ke
20:35means shumal maghrib ke
21:02mdust se hum kishi vectors ko add
21:04karthay hai
21:04wo
21:05aaj
21:06humne
21:06sikha
21:07thank you
21:08alafiz
21:09mo