An Aluminium object is made of a solid cone of height ‘h’ and base – McqOptions

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1.	An Aluminium object is made of a solid cone of height ‘h’ and base diameter D attached to a solid cylinder of diameter D and height ‘h/2’ as shown in figure. It is kept inclined touching to a vertical wall at point ‘A’ and hinged at point B on the floor. The object stays in this inclined position without going to vertical position (axis perpendicular to the floor), only if θ is less than
A.	tan-1(10 D/9h)
B.	π/2 – sin-1 (10 D/h)
C.	π/2 – sin-1 (10 D/9h)
D.	tan-1 (20 D/9h)
Answer» D. tan-1 (20 D/9h)

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