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A cube having a side of 10 cm with unknown mass and 200 gm mass were hung at two ends of an uniform rigid rod of 27 cm long. The rod along with masses...| Doubtify JEE

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  🧠 Physics in Real Life: How to Find the Unknown Mass of a Cube Using Archimedes’ Principle
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A thin solid disk of mass 1 kg is rotating along its diameter axis at the speed of 1800 rpm. An external torque of 25π Nm is applied for 40 seconds, increasing the speed to 2100 rpm. Find the diameter of the disk.

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  ⚙️ A Thin Rotating Disk – Torque & Diameter Problem | Doubtify JEE 📌 Question: A thin solid disk of mass 1 kg is rotating along its diameter axis at the speed of 1800 rpm . An external torque of 25π Nm is applied for 40 seconds , increasing the speed to 2100 rpm . Find the diameter of the disk. 📸 Question Image:
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