What does the direction of angular acceleration tell us ?

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The direction of angular acceleration indicates the rotational direction of an object, either clockwise or counter-clockwise, based on the chosen coordinate system. It helps in understanding how the object's rotational speed is changing over time. The angular velocity vector also provides similar directional information regarding the object's rotation. Both vectors are crucial for analyzing rotational motion in physics. Understanding these concepts is essential for accurately describing the dynamics of rotating systems.
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what does the direction of angular acceleration tell us ?
 
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implab707 said:
what does the direction of angular acceleration tell us ?
Welcome to Physics Forums.

As the name might suggest the orientation of the angular acceleration vector tells us in which direction the object is accelerating (i.e. clockwise or counter-clockwise) according to your co-ordinate system.
 
kindly someone tell me that what does the direction of angular acceleration or angular velocity tell us ?
 
implab707 said:
kindly someone tell me that what does the direction of angular acceleration or angular velocity tell us ?
See my above response.
 

Thread 'Mousetrap Car Energy efficiency'

For simple comparison, I think the same thought process can be followed as a block slides down a hill, - for block down hill, simple starting PE of mgh to final max KE 0.5mv^2 - comparing PE1 to max KE2 would result in finding the work friction did through the process. efficiency is just 100*KE2/PE1. If a mousetrap car travels along a flat surface, a starting PE of 0.5 k th^2 can be measured and maximum velocity of the car can also be measured. If energy efficiency is defined by...
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