01_একাদশ শ্রেণী_পদার্থবিদ্যা_মহাকর্ষ - মহাকর্ষের ভূমিকা
01_একাদশ শ্রেণী_পদার্থবিদ্যা_মহাকর্ষ - মহাকর্ষের ভূমিকা
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00:00What is Mahakarsha?
00:02You may say that falling from a tree,
00:04falling from the sky,
00:06all these are examples of Mahakarsha.
00:08Yes, of course.
00:10But do you know that
00:12Mahakarsha is the
00:14burning of the fire of the earth
00:16which has influenced
00:18our life for centuries.
00:20Is it possible for us to live
00:22in this earth?
00:24This is Mahakarsha.
00:26What is this Mahakarsha?
00:28In this Mahabhishya,
00:30neither of the two objects
00:32attracts the same object
00:34with the same force.
00:36This is called Mahakarsha force.
00:38Like the sun, this attractive force
00:40attracts our earth.
00:42For this reason, the earth
00:44does not split in Mahabhishya.
00:46Imagine, if we had split
00:48from the earth,
00:50then we would not have got the sun,
00:52which has saved the universe.
00:54With the sun,
00:56we would have got the earth.
00:58Similarly,
01:00if we had split from the earth,
01:02then we would not have got the sun,
01:04which has saved the universe.
01:06Similarly,
01:08if we had split from the earth,
01:10then we would not have got the sun,
01:12which has saved the universe.
01:14Similarly,
01:16if we had split from the earth,
01:18then we would not have got the sun,
01:20which has saved the universe.
01:22Similarly,
01:24Mahakarsha force has become
01:26a part of the history of mankind
01:28along with the creation of the ocean.
01:30Then you can see,
01:32along with the cosmic events,
01:34Mahakarsha force is the reason
01:36for the evolution of planetary objects.
01:38But in the 17th century,
01:40Sir Isaac Newton,
01:42when he first said
01:44that for the evolution of planetary objects
01:46and to fall from the tree
01:48or to fall from the sky
01:50with the same force or force
01:52which is called Mahakarsha force,
01:54most of the scientists of the world
01:56thought it was crazy.
01:58At that time, people thought
02:00that the evolution of the universe
02:02i.e. the evolution of the moon and the sun
02:04is a paradoxical event,
02:06which is outside the common sense.
02:08When Newton thought of falling from the tree,
02:10the apple would definitely come to the ground
02:12in the form of an attraction ball
02:14and would not let it get up.
02:16Similarly,
02:18with the same attraction ball,
02:20the moon would definitely attract the earth.
02:22According to his assumption,
02:24the moon would be present
02:26on all four sides of the earth
02:28for the same attraction ball.
02:30At that time,
02:32to decide the weight of the ball,
02:34not only the weight of the attracted object,
02:36but also the distance between the object
02:38and the weight of the earth
02:40would be taken into account.
02:42He said,
02:44the attraction ball or Mahakarsha force
02:46in two objects
02:48is equivalent to the weight of the tree
02:50and equivalent to the distance between
02:52the object and the weight of the tree.
02:54From this point of view,
02:56with the help of his Mahakarsha force,
02:58Gati force and Calculus,
03:00Kepler's forces of gravity
03:02are also proven to be false.
03:04In order to prove
03:06Newton's Mahakarsha force
03:08to be false,
03:10the scientific community has to believe it.
03:12If the sky,
03:14i.e. the universe and the earth
03:16are connected by a string,
03:18it is believed to be the greatest
03:20proof of Newton's theory.
03:22Using Newton's string,
03:24it is possible to find out
03:26the position of the earth,
03:28the sun, the moon,
03:30the gravitational field
03:32and the weight of the object.
03:34The scientist Henry Cavendish
03:36deduced the weight of the earth
03:38from Newton's string.
03:40We will get to know more about
03:42the use of Newton's string
03:44in the pre-modern era.
03:50Have you ever heard of a pendulum?
03:52A thin string
03:54or a heavy rod
03:56at the end of the string
03:58is called a pendulum
04:00if it is used to swing
04:02in an unstable state.
04:04The length of this rod
04:06varies depending on the height
04:08of the earth.
04:10With this string,
04:12it is possible to calculate
04:14time with the help of a pendulum.
04:16The invention of the second
04:18rod or pendulum
04:20is also a new discovery
04:22of modern science.
04:24In the modern era,
04:26the use of Newton's string
04:28is also expected.
04:30We have been able to
04:32send people to the moon
04:34to study the theory of
04:36the gravitational field
04:38and the gravitational field
04:40with the help of the
04:42Newton's string.
04:48For the same reason,
04:50we can also send
04:52artificial satellites
04:54to observe the
04:56gravitational field
04:58around the earth.
05:00For this, we can also
05:02use GPS.
05:04The Mahakasya is not over yet.
05:06The Mahakasya is eternal.
05:08The Mahakasya has a past.
05:10The Mahakasya has a future.
05:12We will continue to
05:14discover the pathway
05:16of the Mahakasya in future videos.