# physics

posted by .

A rotating wheel requires 5.00 s to rotate 30.0 revolutions. Its angular velocity at the end of the 5.00 s interval is 100.0 rad/s. What is the constant angular acceleration of the wheel?

• physics -

average angular speed = Wav = 30 * 2pi/5 =37.7 rad/s
so
(w end + w begin)/2 = 37.7
(100 + w begin)/2 = 37.7
100 + w begin = 75.4
alpha = (w end - w begin)/t

## Similar Questions

1. ### Physics

A rotating wheel requires 9.00 s to rotate 29.0 revolutions. Its angular velocity at the end of the 9.00 s interval is 98.0 rad/s. What is the constant angular acceleration of the wheel in radians/second squared?
2. ### physics

Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.6 s, the angular velocity of the wheel is 5.5 rad/s. The acceleration continues until t = 17 s, when the acceleration abruptly changes to …
3. ### physics

Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.6 s, the angular velocity of the wheel is 5.5 rad/s. The acceleration continues until t = 17 s, when the acceleration abruptly changes to …
4. ### science- physics

A rotating wheel requires 4.17 s to rotate through 37 rev. Its angular speed at the end of the 4.17 s interval is 104 rad/s. What is its constant angular acceleration?
5. ### Physics

A rotating wheel requires 8.00 s to rotate 29.0 revolutions. Its angular velocity at the end of the 8.00 s interval is 95.0 rad/s. What is the constant angular acceleration of the wheel?
6. ### Physics

A spinning wheel is slowed down by a brake, giving it a constant angular acceleration of −4.60 rad/s2. During a 2.60-s time interval, the wheel rotates through 85.4 rad. What is the angular speed of the wheel at the end of the …
7. ### Physics

Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.6 s, the angular velocity of the wheel is 5.9 rad/s. The acceleration continues until t = 19 s, when the acceleration abruptly changes to …
8. ### physics

A rotating wheel requires 6.00 s to rotate 27.0 revolutions. Its angular velocity at the end of the 6.00-s interval is 97.0 rad/s. What is the constant angular acceleration (in rad/s) of the wheel?
9. ### physics

A rotating wheel requires 7.00 s to rotate 28.0 revolutions. Its angular velocity at the end of the 7.00-s interval is 97.0 rad/s. What is the constant angular acceleration (in rad/s) of the wheel?
10. ### Physics

A wheel rotating initially at an angular velocity of 1.0 rad/s, accelerates over a 10 S interval at a rate of 0.1 rad/s^2. What angular displacement does the wheel undergo in this 10 S interval, in terms of revolutions?

More Similar Questions