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An object in circular motion requires a centripetal force to maintain that path. What force would...

An object in circular motion requires a centripetal force to maintain that path. What force would be responsible for keeping the bugs on the disk? If you look closely at your results, you will see that the acceleration vectors do not point exactly at the center of the circle. Why is this the case?

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Answer #1

yeah centripetal force is required to maintain the circular path of a moving object. Note that centripetal force is not a new kind of force, it is usually a known force which just acts towards the centre.

In case of bugs on the disk, when the disk is rotating centrifugal force will act on the bug which is radially outward ( away from the centre along the line joining the bug). But there is frictional force acting between the bug and the surface of the disk acting towards the centre. this frictional force provides the necessary centripetal force for the bug.

now for the accleration vector it is towards the centre only for uniform circular motion. when the motion is non uniform the tangential acceleration also acts along with the radial acceleration and the resultant is not exactly to the centre.

  

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