If θ is instantaneous angle which the line joining the particle and the centre of the loop makes with the vertical, then identify the correct statement(s) related to the normal reaction N between the block and the surface
A
The maximum value N occurs at θ=0
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B
The minimum N occurs at N=π for H>5R/2
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C
The value of N becomes negative for π/2<θ<3π/2
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D
The value of N becomes zero only when θ≥π/2
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Solution
The correct option is D The value of N becomes zero only when θ≥π/2