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A wheel of moment of inertia 2.5 kgm^(2)...

A wheel of moment of inertia 2.5 `kgm^(2)` has an initial angular velocity of 40 rad `s^(-1)`. A constant torque of 10 Nm acts on the wheel. The time during which the wheel is accelerated to 60 rad `s^(-1)` is:

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