Скачать или смотреть A thin solid disk of 1 kg is rotating along its diameter axis at the speed of 1800...| Doubtify JEE

A thin solid disk of 1 kg is rotating along its diameter axis at the speed of 1800 rpm. By applying an external torque of 25π Nm for 40s, the speed increases to 2100 rpm. The diameter of the disk is ____ m.

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