A bead of mass \( \frac{1}{2} \mathrm{~kg} \) starts from rest from \( A \) to move in a vertica...
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A bead of mass \( \frac{1}{2} \mathrm{~kg} \) starts from rest from \( A \) to move in a vertical plane along a smooth fixed quarter ring of radius \( 5 \mathrm{~m} \), under the action of a constant horizontal force \( F=5 \mathrm{~N} \) as shown. The speed of bead as it reaches the point \( B \) is (Take, \( g=10 \mathrm{~ms}^{-2} \) )
(a) \( 14.14 \mathrm{~ms}^{-1} \)
(b) \( 7.07 \mathrm{~ms}^{-1} \)
(c) \( 4 \mathrm{~ms}^{-1} \)
(d) \( 25 \mathrm{~ms}^{-1} \)
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