A bucket of water is whirled in a vertical circle of radius 0.75m . Find the minimum speed at the top so that no water spills out .
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Explanation:
Centrifugal force should balance the weight
⇒
r
mv
2
=mr⇒
v=
rg
=
0.75×10
=2.74ms
w=
r
v
=3.65 rad/s
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