Question

A wheel is rotating about an axis that is in the z-direction. The angular velocity ωz...

A wheel is rotating about an axis that is in the z-direction. The angular velocity ωz is -6.00 rad/s at t = 0, increases linearly with time, and is +4.00 rad/s at t = 19.0 s . We have taken counterclockwise rotation to be positive.

1- How long is the time interval during which the speed of the wheel is increasing?

2- How long is the time interval during which the speed of the wheel is decreasing?

3- What is the angular displacement of the wheel from t = 0 s to t = 19.0 s ?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
wheel is rotating about an axis that is in the z-direction. The angular velocity ?z is...
wheel is rotating about an axis that is in the z-direction. The angular velocity ?z is -6.00 rad/sat t = 0, increases linearly with time, and is +4.00 rad/s at t = 12.0 s . We have taken counterclockwise rotation to be positive. Part A Part complete Is the angular acceleration during this time interval positive or negative? positive negative SubmitPrevious Answers Correct The angular acceleration is positive, since the angular velocity increases steadily from a negative value to a...
A wheel is rotating about an axis that is in the z-direction. The angular velocity ?z...
A wheel is rotating about an axis that is in the z-direction. The angular velocity ?z is ?6.00rad/sat t=0, increases linearly with time and is +8.00rad/s at t=7.00s. We have taken counterclockwise rotation to be positive Q1: Is the angular acceleration during this time interval positive or negative? Q2: Find the duration of the time interval when the speed of the wheel is increasing. Q3: Find the duration of the time interval when the speed of the wheel is decreasing....
A body is initially (at t=0s) rotating about a z-axis as shown below. Its initial angular...
A body is initially (at t=0s) rotating about a z-axis as shown below. Its initial angular speed is 8.50 rad/s. It's rotation is slowing at a constant rate of 0.150 rad/s^2. a) How long does it take to stop? b) How many revolutions did it make in this time period? c) If the point shown is 17.0 cm from the z-axis, what was the initial speed at this point and what was the initial acceleration magnitude at this point?
The angular position of a point on the rim of a rotating wheel is given by...
The angular position of a point on the rim of a rotating wheel is given by ? = 6.0t - 2.0t2 + t3, where ? is in radians and t is in seconds. (a) What is the angular velocity at t = 2 s? rad/s (b)What is the angular velocity at t = 4.0 s? rad/s (c) What is the average angular acceleration for the time interval that begins at t = 2 s and ends at t = 4.0...
A wheel released from rest is rotating with constant angular acceleration of 2.5 rad/s2. (a) After...
A wheel released from rest is rotating with constant angular acceleration of 2.5 rad/s2. (a) After 2.5 s, what is its angular velocity? rad/s (b) Through what angle has the wheel turned? rad (c) How many revolutions has it made? rev (d) What is the speed of a point 1.0 m from the axis of rotation? m/s What is the magnitude of the total acceleration of the same point? m/s2
PRACTICE IT A wheel rotates with a constant angular acceleration of 3.25 rad/s2. Assume the angular...
PRACTICE IT A wheel rotates with a constant angular acceleration of 3.25 rad/s2. Assume the angular speed of the wheel is 2.20 rad/s at ti = 0. (a) Through what angle does the wheel rotate between t = 0 and t = 2.00 s? Give your answer in radians and revolutions. ___________ rad ___________ rev (b) What is the angular speed of the wheel at t = 2.00 s? ___________rad/s (c) What angular displacement (in revolutions) results while the angular...
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude...
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.200 rev/s . The magnitude of the angular acceleration is 0.895 rev/s2 . Both the the angular velocity and angular acceleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter 0.780 m . (a) Compute the fan's angular velocity magnitude after time 0.209 s has passed. (b)Through how many revolutions has the blade turned in the time interval 0.209...
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude...
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.250 rev/s. The magnitude of the angular acceleration is 0.912 rev/s2 . Both the the angular velocity and angular accleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter 0.750 m. a. Compute the fan's angular velocity magnitude after time 0.210 s has passed. b.Through how many revolutions has the blade turned in the time interval 0.210 s from...
A wheel rotates with a constant angular acceleration of 3.90 rad/s2. Assume the angular speed of...
A wheel rotates with a constant angular acceleration of 3.90 rad/s2. Assume the angular speed of the wheel is 2.05 rad/s at ti = 0. (a) Through what angle does the wheel rotate between t = 0 and t = 2.00 s? Give your answer in radians and revolutions. rad? rev? (b) What is the angular speed of the wheel at t = 2.00 s? rad/s? (c) What angular displacement (in revolutions) results while the angular speed found in part...
A rotating wheel requires 7.00 s to rotate 30.0 revolutions. Its angular velocity at the end...
A rotating wheel requires 7.00 s to rotate 30.0 revolutions. Its angular velocity at the end of the 7.00-s interval is 96.0 rad/s. What is the constant angular acceleration (in rad/s) of the wheel?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT