I need some help with centripetal acceleration.(adsbygoogle = window.adsbygoogle || []).push({});

why when an object is whirling in a vertical circle,it must have a centripetal acceleration larger than 'g' in order for it to get to the top of the circle?

what if I give it just enough speed to get to the top(so when it gets to the top,it's speed is zero)will it fall straight down,or will it just "go back"?

it's really hard for me to conceptualize that

thank you in advance

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# Classical mechanics: centripetal acceleration

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