Respuesta :
Answer:
The angular acceleration is same at all the points in the body.
Option (D) is correct.
Explanation:
Given:
When a rigid body rotates about a fixed axis, all the points in the body have the same,
For finding which quantity is same we use pure rotational concept,
[tex]v = \omega r[/tex]
Where [tex]\omega =[/tex] angular frequency, [tex]r =[/tex] radius of rigid body
When a rigid body rotates about a fixed axis angular velocity of all the points in the body are same.
But the tangential speed, tangential acceleration, linear displacement, and centripetal acceleration depend on the position of the points and hence they are not the same.
Therefore, the angular acceleration is same at all the points in the body.
When a rigid body rotates about a fixed axis, all the points in the body have the same D. angular acceleration.
Angular acceleration simply refers to the time rate of change of the angular velocity. It should be noted that the angular acceleration is also known as rotational acceleration.
The angular acceleration is simply the quantitative expression for the change in the angular velocity per time. When a rigid body rotates about a fixed axis, all the points in the body have the same angular acceleration.
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