The floating or sinking of a body in the water is decided by the density of both the body and water’s buoyant force acting on the body by the liquid.The density of plastic is less than the water and the buoyant force exerted by water on the plastiq block is greater than the force exerted by plastic on the water.
Sir the ans of question 13 part 2 is not 5 sec its 10 sec because 5 sec for upward direction and 5 sec for downward direction so total ans is 5 sec+5 sec= 10 sec .
Q. 11 Total time it takes to reach its maximum height = 5 sec Total time it takes to return to the surface of the earth = 10 sec Because 5 sec to go up and 5 sec to come down 🎉
BUOYANCY : WHICH ACTS VERICALLY UPWARDS SO WHEN WE THROW A PLASTIC IN WATER BECAUSE OF THE FORCE INSIDE THE WATER WHICH IS PUSHING IT UPWARDS AND HENCE IT FLOATS
Acc to Newton’s law of motion, every action has an equal and opposite reaction. So the force exerted by earth on moon = the force exerted by moon on earth. Hence they don’t collide and stay in their respective paths without deviating.
@@ultimate69XD Because the moon is a satellite of the earth and it is supposed to revolve around the earth. The gravitational force between the earth and the moon helps to keep the moon in its orbit.. Same goes for earth and the sun, the earth revolves around the Sun, the gravitational force between the sun and the earth helps the earth to stay in its orbit and not deviate into another path
✔ FREE Scholarship Test Class 9th Link 👉vsat.vedantu.com/?Ref_code=VVD1016
The floating or sinking of a body in the water is decided by the density of both the body and water’s buoyant force acting on the body by the liquid.The density of plastic is less than the water and the buoyant force exerted by water on the plastiq block is greater than the force exerted by plastic on the water.
It will float because the plastic bag has less density than the wàter and hence it will float due to buoyant foerce
Tu thora phar ha kar 😑😑
Ye buoyancy ka liya hota ha
Sir the ans of question 13 part 2 is not 5 sec its 10 sec because 5 sec for upward direction and 5 sec for downward direction so total ans is 5 sec+5 sec= 10 sec .
Q. 11
Total time it takes to reach its maximum height = 5 sec
Total time it takes to return to the surface of the earth = 10 sec
Because 5 sec to go up and 5 sec to come down 🎉
the bouyant force acts on the the block of plastic . Hence block of plastic comes up to the surface of water
Question=13 i)
=_49×49
2×9.8
=2401upon 1.96
=24010
196
=122.5✅
BUOYANCY : WHICH ACTS VERICALLY UPWARDS SO WHEN WE THROW A PLASTIC IN WATER BECAUSE OF THE FORCE INSIDE THE WATER WHICH IS PUSHING IT UPWARDS AND HENCE IT FLOATS
Very nice you need more opportunity❤❤❤
Thank you so much sir...i was not able to understand the 17th question this made me solve the whole exercise and it made it very much easier for me 😊🎉
Me literally watching it one day before exam
I hope I pass 😢😢😢😢
46:34 S=ut+at²/2 me t=4sec aur a=-9.8m/s² aur (u=29.4m/s jo first part me calculate kiye the) dalne se answer aa jata hai 39.2 m
I found the numericals of this chapter very difficult but watching this video has helped me a lot.
Thanks sir 🙏
👍🏻👀😊🌷🌼
Gravitational force formula f=m1xm2/d² not r²
sir from newton 2 law of motion , a is directly proportional to F so, why g is same for all F
Bale bale sir
Nice explanation Sir.
Sir big fan
Thanks a lot sir for this session ( love from Sikkim)💜
thank you so much with a wonderful explanation which was helping us to understand it properly and easily sir
Sir why is it 10^20 instead of 10^24 .
Same question sir
Hi
Sir the formula who have wrote it wrong it's F=Gm1m2 upon r² and u wrote Fg=m1m2 upon r² that's wronggg
I think Fg is force of gravitation..
I think Fg is force of gravitation
If u think fg is in the formula its oky but if we wrote Fg in the formula. The formula will be wrongg bcz in the book the formula is F=Gm1m2 upon r²
g is used for gravitation.
Fg means force of gravitation
Thank you so much sir
good video sir
sevrnteenth question was way easier than eighteenth!!
A block of plastic will float in water due to buoyant force.
Because the relative density of Block of plastic is equal to 1
At 26:29 255/2 =27.5 not 122.5
😢
It's a calculation mistake 49×5=145
145/2=122.5
Maja agya sir 😆
Sir if the acceleration is directly proportional to mass why then moon does not come and collide with earth
Acc to Newton’s law of motion, every action has an equal and opposite reaction. So the force exerted by earth on moon = the force exerted by moon on earth. Hence they don’t collide and stay in their respective paths without deviating.
@@RehmaShams if the force is equal then why moon revolves around earth
@@ultimate69XD Because the moon is a satellite of the earth and it is supposed to revolve around the earth. The gravitational force between the earth and the moon helps to keep the moon in its orbit..
Same goes for earth and the sun, the earth revolves around the Sun, the gravitational force between the sun and the earth helps the earth to stay in its orbit and not deviate into another path
@@RehmaShamsit's because of centripetal force
Balle balle balle balle balle balle balle balle balle balle balle balle balle balle balle balle 1:03
❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Thank you so much 🙏🙏
Thanks sir 😊😊❤❤❤❤😊😊
Thank you so much sir for the wonderful session ☺️😀..❤
Sir naa hi samajh aya naa hi samajh aaya Maine aapki purani videos dekhi Kitna Maja aata tha
Bro what are you saying g =-9.8m/s² always
Boycott #newton
Bale bale
Thank you sir 🙇🙇🙏 aasani se samajh aa raha hai
Bhai. Jann kuch samaj nahi arha he
Kuch samaj
Nahi aaya
Anphad😂😂
Nice sir so enteglant ❤❤❤ and thank you so much 🥰😍
Yes sir
Nice one
Happy diwali sir 🎆
26:50 here its 245/2
yes sir
Q no. 3 trick was cool
Question no 13 ke second part ka answer 10sev hoga sir
Thank you sir ❤
Sir I am your big fan
Enjoying a lot in physics 😅
Sir question 9 ka answer gravity hoga
Or aap weight bata rhe hain
because of bro i got top in physics
Thanks
Thankyou sir
sir your question 16 is wrong as it is 667x10^-9 not -13
Tq sir but i want pdf
Balle Balle
Hi
Balle balle😂
Sir appne yeah chapter kab phadha Diya
4 years ago
Balle Balle Sir 😂😂😂😂
2:01 start id qna