A particle of mass \( 200 \mathrm{~g} \), is whirled into a vertical circle of radius \( 80 \mat...

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A particle of mass \( 200 \mathrm{~g} \), is whirled into a vertical circle of radius \( 80 \mathrm{~cm} \) using a massless string. The speed of the particle when the string makes an angle of \( 60^{\circ} \) with the vertical line is \( 1.5 \mathrm{~ms}^{-1} \). The tension in the string at this position is
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