KESEIMBANGAN BENDA TEGAR
Quiz
•
Physics
•
2nd Grade
•
Practice Problem
•
Hard
Solihatul Mungawanah
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tiga gaya F1, F2, dan F3 bekerja pada batang seperti pada gambar berikut. Jika massabatang diabaikan dan panjang batang 4m , maka nilai momen gaya terhadap sumbu putar dititik C adalah .... (sin 53o = 0,8, cos 53o = 0,6 AB = BC = CD = DE = 1 m)
12 Nm
8 Nm
6 Nm
2 Nm
nol
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Momen inersia sebuah benda yang berotasi terhadap titik tetap dipengaruhi oleh …
massa benda
volume benda
massa jenis benda
percepatan sudut
kecepatan sudut
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah jarum detik jam dinding memiliki massa 3 gram dan panjang 15 cm. Momentum sudut jarum detik pada jam dinding tersebut adalah …. kg m2 (IJARUM = mR2)
2,25.10-6
2,5. 10-6
3,5 .10-6
3,75. 10-6
4,25. .10-6
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Susunan 3 buah massa titik seperti gambar di atas.
Jika m1 = 1 kg, m2 = 2 kg dan m3 = 3 kg, berapakah momen inersia sistem tersebut jika diputar menurut poros Q.
14 kgm2
10 kgm2
8 kgm2
6 kgm2
4 kgm2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebatang kayu yang massanya diabaikan, dikerjakan gaya pada titik A, B dan C seperti gambar. Bila titik B sebagai poros, maka momen gaya system adalah…
1,28 Nm
1,60 Nm
2,88 Nm
4,88 Nm
5,44 Nm
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dua bola masing-masing massanya m1= 2 kg dan m2= 3 kg dihubungkan dengan batang ringan tak bermassa seperti pada gambar. Jika system bola diputar pada sumbu di titik a, maka momen inersia system bola adalah…
0,24 kg m2
0,27 kg m2
0,30 kg m2
0,31 kg m2
0,35 kg m2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan gambar dua bola yang dihubungkan dengan seutas kawat. Panjang kawat 12 m, l1= 4m dan massa kawat diabaikan maka besarnya momen inersia system adalah…
52,6 kg m2
41,6 kg m2
34,6 kg m2
22,4 kg m2
20,4 kg m2
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