Question

why initially the velocity increases of the marble but when it goes down it decreases !!
give a reason for both!!
give an appropriate ans!!
no spam
no wrong ans!!

Answer 1

Hii..

I think :

➡️ Here , potential energy is working ..

as mgh .

if we increase the height , potential energy of marble will increase so that the velocity of marble is increasing.

while , when it goes down height will decrease so that potential eneergy of marble is less and that's why it's velocity is decreasing.

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hope this helps :)