1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Shtirlitz [24]
2 years ago
12

The moment of inertia for a 5500 kg solid disc is 12100 kg-m^2. Find the radius of the disc? (a) 2.111 m (b) 2.579 m (c) 1.679

m (d) 2.574 m (e) 2.098 m (f) 2.457 m
Physics
1 answer:
Soloha48 [4]2 years ago
8 0

Answer:

The radius of the disc is 2.098 m.

(e) is correct option.

Explanation:

Given that,

Moment of inertia I = 12100 kg-m²

Mass of disc m = 5500 kg

Moment of inertia :

The moment of inertia is equal to the product of the mass and square of the radius.

The moment of inertia of the disc is given by

I=\dfrac{mr^2}{2}

Where, m = mass of disc

r = radius of the disc

Put the value into the formula

12100=\dfrac{5500\times r^2}{2}

r=\sqrt{\dfrac{12100\times2}{5500}}

r= 2.098\ m

Hence, The radius of the disc is 2.098 m.

You might be interested in
Help! PROJECTILE PROBLEM: A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25
dsp73
Here, 

height at failure, h1 = 525 m, 
upward acceleration, a = 2.25 m/s^2, 
velocity = v m/s, 
<span>
SO, </span>
<span>
v^2 = 2*a*h = 2*2.25*525 = 2362.5 </span>
Now, acceleration, g = 9.8 m/s^2, 
<span>
SO, </span>
<span>
heigt, h1 = v^2/2g = 2362.5 / 2*9.8 = 120.54 meters </span>
Hence, 
<span>
a) </span>
Total height = 525+120.54 = 645.54 meters 

b) 
<span>time, for h1, t = v/g = sqrt(2362.5)/9.8 = 4.96 sec 

---------------------------------

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!</span>
4 0
3 years ago
Read 2 more answers
What is the name of the phenomenon that causes observed light from a star to change its wavelength?
blagie [28]

Answer: This is called the Doppler effect, where waves shift frequency and wavelength as the source travels towards you (higher frequency, shorter wavelength) or away from you (lower frequency, longer wavelength)

Explanation:

hoped this helped have a good day :)

5 0
2 years ago
Correctly round the following number to the ten thousandths place<br> 3.68274
Sergeu [11.5K]
The answer to this question is 3.69
5 0
2 years ago
An object is dropped from rest from a 70.6 m tower. Air resistance is negligible. After 0.32 seconds, what is magnitude and dire
dem82 [27]

Answer:

<em>1,378.9ms²</em>

Explanation:

Given the following

Distance S = 70.6m

Time t = 0.32secs

Initial velocity = 0m/s

Required

Acceleration

Using the equation of motion

S = ut+1/2at²

Substitute

70.6 = 0+1/2a(0.32)²

70.6 = 0.0512a

a = 70.6/0.0512

a = 1,378.9

<em>Hence the acceleration is 1,378.9ms²</em>

7 0
2 years ago
What are some similarities between electricity and gravity?
kow [346]
Similarity : inverse square law for strength of force compared with distance. 
5 0
3 years ago
Other questions:
  • How is distance related to force in this experiment to mass?
    8·1 answer
  • How much power is expended if you lift a 60 n crate 10 meters in 1 second?
    6·1 answer
  • 1) What describes the unusually large release of plasma from the sun's corona?
    12·1 answer
  • Motion is a change in direction. True or False?
    14·2 answers
  • A conclusion is a possible answer to a question. True or False?
    15·2 answers
  • Please help me with 1,2,3,4,5,6
    12·1 answer
  • An automobile battery has an emf of 12.6 V and an internal resistance of 0.0600 . The headlights together present equivalent res
    12·1 answer
  • Help help help help help help help help help
    8·2 answers
  • Physics Practice Help just need an explanation really not looking for an answer
    10·2 answers
  • State advantages of ultrasonic sound in determining the depth of the ocean ​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!