Energi potensial: Perbedaan antara revisi
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Menambahkan penjelasan tentang E↓p = Energi Potensial (J), m = Massa (kg), g = gaya gravitasi (m/s²), h = ketinggian (m). Tag: Dikembalikan VisualEditor Suntingan perangkat seluler Suntingan peramban seluler |
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Baris 19:
Sebutan "energi potensial" pertama kali dikemukakan oleh seorang teknik dan fisikawan berkebangsaan Skotlandia, [[William Rankine]].<ref>William John Macquorn Rankine (1853) "On the general law of the transformation of energy," ''Proceedings of the Philosophical Society of Glasgow'', vol. 3, no. 5, pages 276-280; reprinted in: '''(1)''' ''Philosophical Magazine'', series 4, vol. 5, no. 30, [http://books.google.com/books?id=3Ov22-gFMnEC&pg=PA106&lpg=PA106#v=onepage&q&f=false pages 106-117] (February 1853); and '''(2)''' W. J. Millar, ed., ''Miscellaneous Scientific Papers: by W. J. Macquorn Rankine'', ... (London, England: Charles Griffin and Co., 1881), part II, [http://books.google.com/books?id=-kRB9v6KRvsC&pg=PA203&lpg=PA203#v=onepage&q&f=false pages 203-208].</ref><ref>{{Cite book|last = Smith|first = Crosbie|title = The Science of Energy - a Cultural History of Energy Physics in Victorian Britain|publisher = The University of Chicago Press|year = 1998|isbn = 0-226-76420-6}}</ref>
E↓p = m × g × h
E↓p = Energi Potensial (J)
m = Massa (kg)
g = gaya gravitasi (m/s²)
h = ketinggian (m)
Contoh soal:
Sebuah bola besi dengan massa 5 kg diletakkan di ketinggian 10 meter dari permukaan tanah. Berapakah energi potensial gravitasi yang dimiliki bola besi tersebut?
a. g = 10 m/s²
b. g = 9,8 m/s²
Jawab:
a.
E↓p = m × g × h
E↓p = 5 kg × 10 m/s² × 10 m
E↓p = 5 kg × 100 m/s
E↓p = 500 J
b.
E↓p = m × g × h
E↓p = 5 kg × 9,8 m/s² × 10 m
E↓p = 5 kg × 98 m/s
E↓p = 490 J
== Contoh ==
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