10) A small particle rests on
the top of a hemisphere of
radius 20 cm. The smallest
horizontal velocity given to
it, if it is to leave the
hemisphere without sliding
down to its surface,.is
a) 0.7 m/s
b) 1.4 m/s
c)2.8 m/s
d) 5.6 m/s
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Answer:
b
Explanation:
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