Kinematics Question 568
Question: A particle moves in a circular path with decreasing speed. Choose the correct statement.[IIT JEE 2005]
Options:
A) Angular momentum remains constant
B)Acceleration ($ \vec{a} $ ) it’s towards the center
C)Particle moves in a spiral path with decreasing radius
D) The direction of angular momentum remains constant
Show Answer
Answer:
Correct Answer: D
Solution:
Angular momentuM is a axial vector. It’s directed always in a fix direction (perpendicular to the plane of rotation either outward or inward), if the sense of rotation remain same.
