Question

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

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Inital angular velocity is zero.
a) Angular velocity = Angular acceleration time

Angular velocity = 2.5 2.5 = 6.25rad/s

b) Using.   

Wheel turned through 7.8126rad

c) Number of revolutions =

d) Linear speed = Angular speed radius

v = (6.25) 1 = 6.25m/s

e) Centripetal acceleration,

Tangential acceleration = Angular acceleration radius

Net acceleration,

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
1. A wheel starts from rest and has an angular acceleration of 6.00 rad/s2 . When...
1. A wheel starts from rest and has an angular acceleration of 6.00 rad/s2 . When it has made 3.00 rev its angular velocity in rad/s is: 2. A circular disk of radius 1.00 m rotates, starting from rest, with a constant angular acceleration. What is the centripetal acceleration of a point on the edge of the disk at the instant that its angular speed is 2.50 rev/s?
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...
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 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 1.55 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...
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 18.0 rad/s2....
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 18.0 rad/s2. Find the speed of a point on the blade 2.35 m from the axis of rotation when the blade has completed 18 revolutions.
A wheel starts spinning from rest at a constant angular acceleration of .04 rad/s2. Find the...
A wheel starts spinning from rest at a constant angular acceleration of .04 rad/s2. Find the time needed for the angle between the velocity vector and the net acceleration on any point on the wheel to be 76°.
A 44.0-cm diameter disk rotates with a constant angular acceleration of 3.00 rad/s2. It starts from...
A 44.0-cm diameter disk rotates with a constant angular acceleration of 3.00 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (a) At t = 2.48 s, find the angular speed of the wheel. rad/s (b) At t = 2.48 s, find the magnitude of the linear velocity...
a) At a certain instant, a rotating turbine wheel of radius R has angular speed ω...
a) At a certain instant, a rotating turbine wheel of radius R has angular speed ω (measured in rad/s). What must be the magnitude α of its angular acceleration (measured in rad/s2) at this instant if the acceleration vector a⃗ of a point on the rim of the wheel makes an angle of exactly 30∘ with the velocity vector v⃗ of that point? Express your answer in terms of some or all of the variables R and ω. b) At...
A wheel rotates with a constant angular acceleration of 3.00 rad/s2. If the angular speed of...
A wheel rotates with a constant angular acceleration of 3.00 rad/s2. If the angular speed of the wheel is 2.50 rad/s at t = 0, how many revolutions has the wheel gone through after 2.90 s?
A cylinder rotating about its axis with a constant angular acceleration of 1.6 rad/s^2 starts from...
A cylinder rotating about its axis with a constant angular acceleration of 1.6 rad/s^2 starts from rest at t=0. At the instant when it has turned through 0.40 radian, find the magnitude of the tangential velocity at point on the rim (radius=0.15 m)?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT