1.

A weightless thread can support tension upto 30 N. A stone of mass 0.5 kg is tied to it and is revolved in a circular path of radius 2 m in a vertical plane. If \[g=10m/{{s}^{2}}\], then the maximum angular velocity of the stone will be                          [MP PMT 1994]

A.             \[5\,\,rad/s\]
B.                      \[\sqrt{30}\,rad/s\]
C.             \[\sqrt{60}\,rad/s\]
D.                      \[10\,rad/s\]
Answer» B.                      \[\sqrt{30}\,rad/s\]


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