Which of the following are true? (Select all that apply) 1. All parts of a wheel

Question

Which of the following are true? (Select all that apply)
1. All parts of a wheel rotating about a fixed axismust have the same angular acceleration.
2. Angular speed and linear velocity have the samedimensions.
3. All parts of a wheel rotating about a fixed axismust have the same centripetal acceleration.
4. All parts of a wheel rotating about a fixed axismust have the same angular speed.
I think 2 is false and 4 is true. I can;t figure out 1 or3. Which of the following are true? (Select all that apply)
1. All parts of a wheel rotating about a fixed axismust have the same angular acceleration. 2. Angular speed and linear velocity have the samedimensions. 3. All parts of a wheel rotating about a fixed axismust have the same centripetal acceleration. 4. All parts of a wheel rotating about a fixed axismust have the same angular speed.
I think 2 is false and 4 is true. I can;t figure out 1 or3. Which of the following are true? (Select all that apply)
1. All parts of a wheel rotating about a fixed axismust have the same angular acceleration.
2. Angular speed and linear velocity have the samedimensions.
3. All parts of a wheel rotating about a fixed axismust have the same centripetal acceleration.
4. All parts of a wheel rotating about a fixed axismust have the same angular speed.
I think 2 is false and 4 is true. I can;t figure out 1 or3.

Explanation / Answer

Number 1: A wheel rotating about a fixed axis changes accelerationthroughout, so angular acceleration is always changing =False. -- Number 2: Angular speed = rad/s, linear = m/s (False) -- Number 3: True - The centripetal acceleration is towards the center(True) -- Number 4: (True), other wise you have have deformity. -- -- Hope this helps.

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