LEMBAR KERJA SISWA (LKS) HUKUM ARCHIMEDES KEGIATAN 1 Tujuan : Menentukan bea!n"a #a"a an#kat A$at %an ba&an : 1. 2. 3. 4.
Beban Tali penggantung penggantung beban Neraca Neraca pegas pegas Botol Botol yang yang berisi berisi air air
Ca!a ke!ja : 1. Gantungl Gantunglah ah beban beban dengan dengan mengg menggunak unakan an tali! tali! 2. Timban Timbanglah glah berat berat beban tersebut tersebut di udara dengan dengan menggunakan menggunakan neraca neraca pegas dan catat catat hasilnya pada tabel pengamatan! 3. Masukkan beban yang sudah ditimbang ditimbang tersebut tersebut ke ke dalam botol botol yang sudah sudah berisi berisi air ! 4. kemudian kemudian amati berat berat benda yang terukur di dalam at cair dan catat hasilnya hasilnya pada tabel tabel pengamatan! Tabe$ 'en#aatan N
Be!at ben%a u%a!a (Wu)
%*
Be!a Be!att ben% ben%a a %a$a %a$a a*! (Wa)
Ga"a (Wu+Wa)
an#kat
'e!tan"aan : 1. apakah berat berat beban di udara sama dengan berat beban beban saat ditimbang ditimbang dalam dalam air "a#ab $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$. 2. "elask "elaskan an alasanmu alasanmu%% menga mengapa pa berat berat beban beban di udara udara denga dengan n berat berat beban di dalam dalam air berbeda "a#ab $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$.. 3. Tulisk uliskan an bagima bagimana na hubung hubungan an matema matematis tis antara antara berat berat beban beban di udara udara%% berat berat beban beban di dalam air dan besarnya gaya angkat! "a#ab& $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$..
'esimpulan& tuliskan kesimpulan yang dapat kamu ambil dari percobaan yang kamu lakukan! $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$
KEGIATAN , Tujuan : Men"e$*%*k* -en#a!u& $a!utan #a!a te!&a%a- kea%aan te$u! (ten##e$a. e$a"an# %an te!a-un#) A$at %an ba&an : 1. Botol yang beiri air 2. Telur 3. Garam
Ca!a ke!ja : 1. Masukkan telur ke dalam botol yang berisi air% amati keadaan telur dan catat datanya pada tabel pengamatan 2. Masukkan garam secara perlahan dan aduk sampai telur berada di tengah(tengah at air% catat keadaan telur pada tabel hasil pengamatan 3. Masukkan kembali garam ke dalam air dan aduk pelan(pelan sampai telur berada di permukaan air% catat kembali keadaan telur pada tabel hasil pengamatan 4. )ati(hatilan melakukan praktikum agar tidak membasahi me*a+buku pela*aranmu! Tabe$ 'en#aatan
,ebelum garam
Kea%aan te$u! dimasukkan Garam yang dimasukkan Garam sedikit banyak
yang
dimasukkan
-ertanyaan 1. Bagaimana keadaan telur sebelum dimasukkan garam dan sesudah dimasukkan garam "a#ab& $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$.. 2. pa yang menyebabkan ter*adinya perbedaan keadaan telur dari kegiatan pengamatan tersebut "elaskan! "a#ab& $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 3. pa /ungsi garam pada percobaan yang kamu lakukan "a#ab& $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$