भौतिकी में बल का मात्रक

 सबसे पहले हम बल के बारे में कुछ जानकारी देंगे-

बल  एक सदिश राशि(जिसमें परिमाण और दिशा इसके साथ ही सदिश के योग के नियमों का पालन करे) है
किसी वस्तु पर लगाया बल, उस वस्तु के द्रव्यमान और उसमें उत्पन्न त्वरण के बराबर होता है अतः 

बल =द्रव्यमान *त्वरण 

चूँकि द्रव्यमान का एस. आई मात्रक किग्रा तथा त्वरण का एस. आई मात्रक मीटर प्रति सेकेंड स्क्वायर  होता है 
अतः बल की एस. आई मात्रक किग्रा मीटर प्रति सेकेंड स्क्वायर  होती है जिसे हम न्यूटन भी कहते हैं 


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Magic number in mathematics

Magic Number in mathematics

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Most of you will know about Magic Number in mathematics which was discovered by our Indian mathematician shree Ramanujan . Intresting Fact About Magic Number Magic Number is 1729 It was discovered by our great mathematician Shree Ramanujan,when he was physically unwell condition in  hospital situated in England. When Ramanujan's mentor Prof. Hardy came to see health in hospital by his car with number plate marked as 1729,at that moment Ramanujan said that ,it was an interesting  smallest  number  ,which was sum of cubes of two different types sets of numbers. Why is it known as a magic number?   Because it is sum of cubes of two different pairs of numbers like below 9^3 + 10^3 = 729 + 1000 = 1729  and 1^3 + 12^3 = 1 + 1728 = 1729
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DIFFERENCE BETWEEN RATIONAL NUMBER AND RATIONAL EXPRESSION:

  First we discuss about definitions of rational number , rational expression and terms involved in definition. Definition Of Rational Number: A number which is written in form of  p/q ,where q does not equal to 0 and p,q must be integers. (integers I={---,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,---}) Examples:   -7/5,2/3,0=0/1,2=2/1,5/2 etc. Explaination:   Here we take one of above example like -7/5 . Comparing -7/5 by p/q,we find p=-7 and q=5(which is not equal to 0) therefore by definition -7/5 is a rational number. Definition Of Rational Expression: An expression which is in form of p(x)/q(x),where q(x) does not equal to zero(0) polynomials and p(x),q(x) must be polynomials in x. (polynomials like x+4,x^2+9,x^4+5 etc are polynomials of degrees 1,2,4 respectively). Examples:  (x+5)/(x+4), comparing this expression by p(x)/q(x),we find p(x)=(x+5) and q(x)=(x+4)(which is not equal to 0 polynomial) therefore by definition (x+5)/(x+4) is a rational expression. (ex...
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