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DESCRIPTION
mnmnTRANSCRIPT
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CIRCULAR MOTION
(i) If velocity becomes zero at height h1O = u2 2gh,
or h1 = 2u
2g ........ (v)
(ii) If tension becomes zero at height h2
O = mr
[u2 + gr 3gh2]
or u2 + gr 3gh2 = 0
or h2 = 2u gr3g+
.........(vi)
(iii) Case of oscillationIt v = 0, T 0then h1 < h2
2 2u u gr2g 3g
+ h22 2u u gr
2g 3g+
>
3u2 > 2u2 + 2gr
u2 > 2gr
u > 2gr
5gr u 2gr> >
(v) Case of complete the circle
u 5gr T 0
v 0
v=0,T 0
v 2gr >> >
u > 5gr
Case of completethe circle or
looping the loop