Calculating Angular Velocity at the End of a Time Interval

AI Thread Summary
To calculate the angular velocity at the end of a 2.0-second interval for a wheel with a constant angular acceleration of 2.0 rad/s², the kinematic equation θf = θi + ωi*t + 0.5*α*t² is applied. The wheel completes 2.165 revolutions, which converts to approximately 13.6 radians. Using the known values, the initial angular velocity (ωi) is assumed to be zero, leading to the calculation of final angular velocity (ωf). The calculated values are significantly higher than the provided answer options, indicating a potential error in the initial assumptions or calculations. The discussion emphasizes the need for clarity in the application of kinematic equations to solve for angular velocity accurately.
hoxbug
Messages
1
Reaction score
0

Homework Statement


A wheel rotating about a fixed axis with a constant angular acceleration of 2.0 rad/s2 turns through 2.165 revolutions during a 2.0 s time interval. What is the angular velocity at the end of this time interval?


Homework Equations


I was using the kinematic Equations
\thetaf = \thetai + \omegait + 0.5\alphat2

Am i doing something wrong?
The answers that I can choose are, 9.7 rad/s, 9.1 rad/s, 9.3 rad/s, 9.5 rad/s, 8.8 rad/s

All the answers I get are way larger

I must be doing something obviously wrong but I just can't see it.
 
Physics news on Phys.org
Lets see your work then.
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Struggling to make relation between elastic force and height'

Thread 'Struggling to make relation between elastic force and height'

Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
View full post »

Similar threads

Solve Angular Velocity & Acceleration - Dimensional Analysis
Replies
3
Views
2K
Angular velocity and angular acceleration of a turbine
Replies
17
Views
3K
What is the final angular velocity of each cylinder
Replies
1
Views
2K
How Do You Correctly Cancel Angular Momentum in Physics Problems?
Replies
3
Views
1K
Angular Velocity of a wheel problem
Replies
4
Views
3K
Centripetal Acceleration while Swinging a Stone on a String
Replies
9
Views
2K
What Causes Discrepancies in Calculating Initial Angular Velocity?
Replies
2
Views
2K
Find the angular speed at t=3 seconds
Replies
4
Views
3K
How to calculate angular speed?
Replies
7
Views
3K
Can I use this solution? Angular motion
Replies
5
Views
4K

Hot Threads

Recent Insights

Back
Top