Explanation
The total energy remains constant the other three are changes continuously in vertical direction.
Angular momentum is given as L = m(r× v). Direction(r × v). Hence direction of angular momontum remains the same.
Second’s hand of ta watch completes its one cycle takes 1 second.
The force of gravity acts downwards and is unable to alter horizontal motion .The vertical force acts perpendicular to the horizontal motion.
When a particle of mass M, moving in a horizontal circle of radius ‘r’. The potential energy on the horizontal planes is equal to zero.
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