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Pencetus Teori Gravitasi

Apel, siapa yang tidak tahu apel? Apel merupakan buah yang populer di dunia. Ada sekitar 200 Jenis apel. Silakan dicoba satu persatu... 

Suatu malam, Sir Isac Newton sedang duduk dibangku belakang rumahnya sambil membaca sebuah buku. Tiba-tiba sebuah apel jatuh dari pohon di belakangnya dan diambilnya. "Wah lumayan nih, sedang baca buku dikirimi apel" dia pun mengusap apel tersebut dan memakannya sampai terdengar suara “KRAUK” 

Sontak tercetus di otak Newton bahwa: Mengapa apel yang kecil ini bisa jatuh, sementara bulan yang sangat besar tetap mengapung di angkasa sana? Apakah ada faktor lain yang memengaruhi gaya Gravitasi selain massa benda? Akhirnya beliau bersemangat untuk melakukan penelitian mengenai gravitasi. 

Setelah itu beliau menemukan bahwa semakin besar masa 2 buah benda, maka gaya gravitasinya semakin besar. Namun, semakin jauh jaraknya maka semakin kecil gaya gravitasinya. Hukum tersebut dirumuskan sebagai:

Dengan
F = gaya gravitasi
G = konstanta Gravitasi (6,67 x 10-11 Nm2/kg)
m1 = massa benda pertama
m1 = massa benda kedua
r = jarak kedua benda


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