A $1 \,kg$ stone at the end of $1 \,m$ long string is whirled in a vertical circle at constant speed of $4\, m/sec$. The tension in the string is $6 \,N$, when the stone is at
A $1 \,kg$ stone at the end of $1 \,m$ long string is whirled in a vertical circle at constant speed of $4\, m/sec$. The tension in the string is $6 \,N$, when the stone is at
Top of the circle
Bottom of the circle
Half way down
None of the above
A $1 \,kg$ stone at the end of $1 \,m$ long string is whirled in a vertical circle at constant speed of $4\, m/sec$. The tension in the string is $6 \,N$, when the stone is at
$mg = 1 \times 10 = 10N,$ $\frac{{m{v^2}}}{r} = \frac{{1 \times {{(4)}^2}}}{1} = 16$
Tension at the top of circle = $\frac{{m{v^2}}}{r} - mg = 6N$
Tension at the bottom of circle = $\frac{{m{v^2}}}{r} + mg = 26N$
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