Question

# A constant torque of 31.4 Nm is exerted on a pivoted wheel. If angular acceleration of wheel is 4π rad s−2, then the moment of inertia of wheel is 3.5 kgm22.5 kgm24.5 kgm25.5 kgm2

Solution

## The correct option is B 2.5 kgm2τ=31.4Nm,α=4π rad s−2τ=Iα⇒I=31.44π=2.5 kgm2

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