Rotational MotionHard
Question
A partical is confined to rotate in a circular path decreasing linear speed, then which of the following is corrent ?
Options
A.
(angular momentum) is conserved about the centre
(angular momentum) is conserved about the centre B.only direction of angular momentum is conserved.
is conserved.C.It spirals towerds the centre.
D.its acceleration is towerds the centre.
Solution
Since v is changing (decreasing ), L is not conserved in magnitude. Since it is given that a particle is cinfined to rotate in a circular path, it can not have spiral path. Since the particle has two accelerations ac and at therefore the net acceleration is not towers the centre.
The direction of remains same even when the speed decreases
The direction of
remains same even when the speed decreasesCreate a free account to view solution
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