
Ujian tengah semester XI IPA

Quiz
•
Physics
•
11th Grade
•
Hard
APRIANA MARONGI
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Sebatang plastik dipengaruhi tiga buah gaya di samping.
Diketahui FA = FC = 10N, dan FB = 20N. Jika jarak AB=BC=20 cm, berapa besar momen gaya batang terhadap titik A?
6 Nm
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Mana yang termasuk rumus umum menentukan besar momentum sudut?
3.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Seorang penari balet memiliki momen inersia 4 kg.m2 ketika berputar dengan kecepatan sudut 2 rad/s. Ketika kedua lengannya merapat ke tubuh, momen inersianya menjadi 2,5 kg.m2. Berapakah kecepatan sudut penari balet saat itu?
4.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Sebatang silinder pejal diturunkan dari mobil boks menggunakan bidang miring bersudut 30o. Tentukan percepatan yang dialami silinder ketika menggelinding! (Anggap nilai g=10m/s2)
5.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Bidang datar berbentuk huruf F mempunyai ukuran-ukuran seperti gambar di samping. Tentukan koordinat titik berat bidang tersebut terhadap titik O!
(x, y) = (1, 3)
(x, y) =(1, 6)
(x, y) =(4, 5)
(x, y) =(2, 3)
6.
MULTIPLE CHOICE QUESTION
10 mins • 10 pts
Seutas kawat berdiameter 1,4 mm sepanjang 60 cm digantungi beban bermassa 100gram. Kawat tersebut bertambah panjang 0,3 mm. Apabila percepatan gravitasi bumi sebesar 9,8 m/s2, hitunglah besar modulus young bahan?
12,72 x 109 N/m2
127,2 x 109 N/m2
1,272 x 109 N/m2
1272 x 109 N/m2
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Tentukan mana yang termasuk rumus hukum hooke (Gaya Pemuli) di bawah ini?
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