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Q.

A wheel having moment of inertia $2 k g m^{2}$ about its vertical axis, rotates at the rate of 60 rpm about this axis. The torque which can stop the wheel’s rotation in one minute would be

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An Intiative by Sri Chaitanya

a

$\frac{π}{18} N m$

b

$\frac{π}{12} N m$

c

$\frac{π}{15} N m$

d

$\frac{2 π}{15} N m$

answer is C.

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Detailed Solution

$τ = I α where |α| = \frac{w}{t}$

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