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3-2.Motion in Plane
hard
A conical pendulum of length $1\,m$ makes an angle $\theta \, = 45^o$ w.r.t. $Z-$ axis and moves in a circle in the $XY$ plane.The radius of the circle is $0.4\, m$ and its centre is vertically below $O$. The speed of the pendulum, in its circular path, will be ..... $m/s$ (Take $g\, = 10\, ms^{-2}$)
A$0.4$
B$4$
C$0.2$
D$2$
(JEE MAIN-2017)
Solution

Standard 11
Physics