Question

wht is gravity... ..???

Answer 1

$\boxed{ \boxed{ \bf \pink { \bold \: Gravity \: or \: Gravitation\: }}}$

➵ Gravity is a force which attracts anything towards the centre of the earth.

Example :- Attraction of meteors to the earth.

$\boxed{ \boxed{ \bf \pink { \bold \: Universal \:Law \: of \: Gravitation\: }}}$

➵ Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them. the force is along the line joining the centres of two objects.

$\setlength{\unitlength}{20} \begin{picture}(6,6) \put(2,2){\circle{14}}\put(8,2){\circle{14}} \put(2,2){\circle*{0.15}} \put(8,2){\circle*{0.15}} \put(2,2){\line(1,0){6}} \put(4,2){\line( - 1,1){0.5}} \put(6,2){\line(1,1){0.5}} \put(4,2){\line( - 1, - 1){0.5}} \put(6,2){\line( 1, -1){0.5}} \put(4.5,1.25){\vector( - 1,0){3}} \put(5,1.25){\vector(1,0){3}}\put(4.7,1.2){ \tt d }\put( 3.5, - 0.5){ \framebox{ \rm F = \displaystyle \dfrac{G Mm }{ d^2} }}\end{picture}$

➵ Let, two objects A and B of masses M and m at a Distance d as shown in the figure. Let the force of attraction between two objects be F .According to the universal law of gravitation the force between two object is directly proportional to the product of their masses.That is,

$\boxed{ \red{ \bf \: F\propto M\times m}} \: .................(1)$

➵ And the force between two object is inversely proportional to the the square of the distance between them , That is,

$\boxed{ \red{ \bf \: F\propto \frac{1}{d^{2}}}} \: .................(1)$

➵ Combining equation 1 and 2 ,

$\implies \boxed{ \red{ \bf \:F = G \: \frac{M \times m}{d ^{2} } }}$

➵ Where G is the constant of proportionality and is called the universal gravitation constant

Answer 2

$\huge \underline{ \blue{ \boxed{ \bf \red{Answer:-}}}}$

$\small\underline{ \blue{ \boxed{ \bf \orange{Gravity \: Or \: Gravitation:-}}}}$

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy–including planets, stars, galaxies, and even light–are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.

$\bf \underline{ \blue{ \boxed{ \bf \purple{More \: About \: Gravity:-}}}}$

Gravity is measured by the acceleration that it gives to freely falling objects. At Earth's surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second. Thus, for every second an object is in free fall, its speed increases by about 9.8 metres per second.

$\bf\blue{Hope\ it\ helps.}$

$\bf\pink{Plz\ Mark\ As\ Brainliest.}$