One of the choices below increases the magnitude of the acceleration of a point on a...
One of the choices below increases the magnitude of the acceleration of a point on a spinning wheel by a factor of 4. Don NOT assume that the wheel is spinning at a constant speed.
A) The magnitudes of the angular velocity and the angular acceleration are each multiplied by a factor of 4
B) The magnitude of the angular velocity is multiplied by a factor of 4 and the angular acceleration is not changed
C) The magnitudes of the angular velocity and the angular acceleration are each multiplied by a factor of 2
D) The magnitude of the angular velocity is multiplied by a factor of 2 and the angular acceleration is not changed
E) The magnitude of the angular velocity is multiplied by a factor of 2 and the magnitude of the angular acceleration is multiplied by a factor of 4.
Professor told us the answer was E, please explain why and be detailed please.
Homework Answers
Magnitude of acceleration is the magnitude of the vector sum of tangential and centripetal acceleration.
Option E says anglular velocity is doubled and angular acceleration is made 4 times.
When angular velocity is made twice the velocity becomes twice since the radius cannot be changed.
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