02একাদশ শ্রেণী_পদার্থবিদ্যা_মহাকর্ষ - নিউটনের মহাকর্ষ সূত্র
02একাদশ শ্রেণী_পদার্থবিদ্যা_মহাকর্ষ - নিউটনের মহাকর্ষ সূত্র
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00:00In this video, we will learn about Newton's Mahakasya Shutra.
00:14Before that, we will know a little about who Newton was and where he started working on
00:24Mahakasya.
00:25Before that, Newton spread science and religion like fire through the invention of printing
00:32machines.
00:33Martin Luther's religious movement brought a modern branch of Christianity to England
00:41and various European countries.
00:44Protestants.
00:45These Protestants were not old like other Christians.
00:49Their religious leaders encouraged people to explore the mysteries of the universe
00:55and asked questions about the hidden stories.
00:58British scientist Isaac Newton was a religious Protestant.
01:03He was successful in studying optics at the beginning of his career.
01:08Towards the end of the 17th century, he became more interested in the creation of God.
01:14Then comes the story of Newton's appeal.
01:17At that time, England was in the midst of a terrible pandemic.
01:21Newton's workplace, Cambridge University, was closed.
01:24He sat in his mother's garden and saw an apple falling from a tree during the harvest.
01:31Now you think, what is the meaning of this incident?
01:35The apple is falling from the tree in a very warlike way.
01:38The incident of this apple falling forced him to think that the attraction of the apple
01:44to the earth is the same attraction of the apple to the earth.
01:51From this idea, Newton suggests his magic formula.
01:55His formula says,
01:57In this world, any two objects attract each other in a parallel line.
02:05This attraction is equal to the magnitude of the force of the two objects
02:09and is equal to the distance of their distance.
02:13In other words, this attraction depends on the magnitude of the force of the two objects and their distance.
02:19For example, the average distance between the objects M1 and M2 is r.
02:24If the attraction force is F, then according to the attraction formula,
02:29F is proportional to M1 into M2 and F is proportional to 1 by r square.
02:36If we add these two attractions, F is proportional to M1 into M2 by r square.
02:43Here, Newton suggests an equivalent attraction, capital G.
02:48Therefore, the attraction of Newton's magic formula is written as
02:53F is equal to capital G into M1 M2 by r square.
02:58Here, the G attraction is also called the universal magic attraction.
03:03This attraction is very special.
03:06Its value is not dependent on anything like temperature, gravity, or gravity.
03:13We will learn more about the universal magic attraction in our next videos.
03:18Keep watching.