A circular disc of radius \( r=5 \mathrm{~m} \) is rotating in horizontal plane about y-axis. Y-...

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A circular disc of radius \( r=5 \mathrm{~m} \) is rotating in horizontal plane about y-axis. Y-axis is vertical axis passing through the centre of disc and \( x-z \) is the horizontal plane at ground. The height of disc above ground is \( \mathrm{h}=5 \mathrm{~m} \). Small particles are ejecting from disc in horizontal direction with speed \( 12 \mathrm{~m} / \mathrm{s} \) from the circumference of disc then the distance of these particles from origin when they hits the \( x-z \) plane is -
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