Physics, 16.12.2021 04:00 embersongracie

1. Bola pejal berjari-jari R dari keadaan diam menggelinding pada bidang datar oleh gaya F seperti ditampilkan pada gambar. Jika momen inersia bola pejal = 2 2 maka nilai α setara dengan. A. ∝= 2 5
B. ∝= 7 5
C. ∝=2 5
D. ∝= 5 7
E. ∝=7 5
5
2. Perhatikan gambar penari balet berikut ! Penari balet tersebut berputar dengan tangan terentang pada kecepatan sudut 9 rpm di atas lantai licin dengan momen inersia 6 kg. m2. Kemudian kedua tangannya dilipat menyilang di dada sehingga kecepatan sudutnya menjadi 12 rpm. Momen inersia penari balet pada kondisi akhir adalah .
A. 7,0 kg. m2
B. 6,5 kg. m2
C. 6,0kg. m2
D. 4,5kg. m2
E. 3,0 kg. m2
3. Sistem pada gambar berikut dalam keadaan setimbang. Bila batang AB homogen dan memiliki berat 70 N, maka besar gaya tegangan tali (T) adalah .
A. 50N
B.100N
C.150N D.250N E. 450N

1. Bola pejal berjari-jari R dari keadaan diam menggelinding pada bidang datar oleh gaya F seperti

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 05:40

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Answers: 1

Answer

Physics, 22.06.2019 07:00

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next

Answers: 1

Answer

Physics, 22.06.2019 14:10

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

Answers: 3

Answer

Physics, 22.06.2019 16:00

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Answers: 1

Answer

You know the right answer?

1. Bola pejal berjari-jari R dari keadaan diam menggelinding pada bidang datar oleh gaya F seperti d...

Questions