2-506 kg 75 3-7. A mass of 25 kg is suspended by a light string from a pulley of radius 0.25 m and a moment of inertia 0.8 kg m². The pulley turns on bearing of negligible friction. L 3. When the mass descends 2 m, the pulley turns through 458. 2/157 1.2732-360= Circ= 1.5707 4. When the mass descends 2 m, the potential energy of the mass decreased by 0 5. The change in kinetic energy of the mass and pulley when the mass descends 2 m 6. The angular acceleration of the pulley is Basic

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