Tension in string revolving in a vertical circle with a mass m at end which is at lowest position

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5.Work, Energy, Power and Collision

easy

The tension in the string revolving in a vertical circle with a mass $m$ at the end which is at the lowest position

A

$\frac{{m{v^2}}}{r}$

B

$\frac{{m{v^2}}}{r} - mg$

C

$\frac{{m{v^2}}}{r} + mg$

D

$mg$

(AIIMS-2001)

Solution

(c)Tension = Centrifugal force + weight $ = \frac{{m{v^2}}}{r} + mg$

Standard 11

Physics

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