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
Montano1993 [528]
3 years ago
10

An engine flywheel initially rotates counterclockwise at 5.03 rotations/s. Then, during 23.5 s, its rotation rate changes to 2.6

3 rotations/s clockwise. Find the flywheel's average angular acceleration (including its sign) in radians per second squared. Define counterclockwise rotation as positive.
Physics
1 answer:
Sveta_85 [38]3 years ago
5 0

Answer:

the flywheel's average angular acceleration is -2.05 rad/s²

Explanation:

<u>Note:</u> counterclockwise is positive

         clockwise is negative

Given;

initial angular velocity, \omega _i = 5.03 rev/s = 5.03\frac{rev}{s} \times \frac{2\pi \ rad}{1 \ rev} = 31.61 \ rad/s

final angular velocity, \omega_f= -2.63 rev/s = -2.63 \ \frac{rev}{s} \times \frac{2\pi \ rad}{1 \ rev} = -16.53 \ rad/s

duration of the flywheel rotation, Δt = 23.5 s

The average acceleration of the flywheel is calculated as;

a_r = \frac{\Delta \omega}{\Delta t} = \frac{\omega_f  - \omega _i}{t_2-t_1} = \frac{-16.53 \ - \ 31.61}{23.5} = -2.05 \ rad/s^2

Therefore, the flywheel's average angular acceleration is -2.05 rad/s²

You might be interested in
Electrons move from negative to positive while the voltage flows ________ to _______ .
Sedaia [141]

Answer:

positive to negative.

3 0
2 years ago
Will brainlist 20 points
Len [333]

Your answer for this question is the third option.

3 0
2 years ago
Read 2 more answers
When you look ahead while driving, it is best to:
vodka [1.7K]
I think its [B]
Personally i would say [B] only because If you are looking beyond the car in front of you..... then what if the car in front of you throws on breaks... you would hit them in the butt because you weren't paying attention to the car.
And majority of the time if your looking in the lanes beside you then you are most likely trying to get in that lane.
4 0
2 years ago
What are some ways you can vary your tone of voice to help you communicate effectively with others? A. Speaking aggressively
Leno4ka [110]
The answer is D, talking more loudly or quietly.
<span>
An expressive voice can bring totally different meaning to what you are saying. If you speak in a monotone voice, you are implying that you do not care about what you are saying or what the other person is talking about. If you speak expressively with some parts quieter or louder to make a point, it lets the listener know that you care about what you are saying and you care about what they have to say too. You can also emphasize a point by speaking louder or indicate that something is not as important by speaking softer.</span>

7 0
3 years ago
Read 2 more answers
Explain the forces that keep a rock balanced on a tiny pedestal. Please help me with this!
SashulF [63]
Normal force for the rock because that makes an object stable at its position.
static friction because micro-welts hold its particle on its position so it doesn't change in position by a potential energy. Gravity makes it stay on the ground because its force attraction between an object and the earth. 
Hope this helps <span />
8 0
2 years ago
Other questions:
  • What is the graph of the relationship between the volume of a gas at a constant pressure
    7·1 answer
  • oppositely charged objects attract each other this attraction holds electrons in Adams and hold on to one another in many compou
    12·1 answer
  • What symbol do we use for the resultant?
    12·1 answer
  • In the equation for the gravitational force between two objects, which quantity must be syuu
    13·1 answer
  • After a short time, the moving sled with the child aboard reached a rough level surface that exerts a constant frictional force
    8·2 answers
  • Together, two students exert a force of 825 N in pushing a car a distance of 35 m.
    6·1 answer
  • Which of these is NOT a line on the tennis court?
    10·2 answers
  • Which person will experience what happens to sounds due to the Doppler effect?
    6·1 answer
  • One of the ways that scientists determine the distance between Earth and other objects in space is to send light waves toward an
    11·1 answer
  • Because the wavelength of visible
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!