A brick of mass $m$ , tied to a rope , is being whirled in a vertical circle, with a uniform speed. The tension in the rope is:

The same throughout

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Largest when the brick is at the highest point of the circular path and smallest when it is at the lowest point

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Largest when the rope is horizontal and smaller when it is vertical.

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Largest when the brick is at the lowest point of the circular path and smallest when it is at the highest point

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Solution

The correct option is D Largest when the brick is at the lowest point of the circular path and smallest when it is at the highest point
$T_{H} + m g = m ω^{2} r$
$T_{L} - m g = m ω^{2} r$
$∴ T_{L} > T_{H}$

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A brick of mass m , tied to a rope , is being whirled in a vertical circle, with a uniform speed. The tension in the rope is:

The correct option is D Largest when the brick is at the lowest point of the circular path and smallest when it is at the highest pointTH+mg=mω2rTL−mg=mω2r∴TL>TH

A brick of mass $m$ , tied to a rope , is being whirled in a vertical circle, with a uniform speed. The tension in the rope is:

The correct option is D Largest when the brick is at the lowest point of the circular path and smallest when it is at the highest point
$T_{H} + m g = m ω^{2} r$
$T_{L} - m g = m ω^{2} r$
$∴ T_{L} > T_{H}$