jee_main_2025_08_april_evening - Rotational Motion Topics

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Sample Questions in this Chapter

QUESTION #2 Moment of Inertia
A rod of linear mass density lambda^prime and length L is bent to form a ring of radius R. Moment of inertia of ring about any of its diameter is:
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QUESTION #24 Angular Acceleration and Torque
A thin solid disk of 1mathrm~kg is rotating along its diameter axis at the speed of 1800mathrm~rpm. By applying an external torque of 25pimathrm~Ncdot m for 40mathrm~s, the speed increases to 2100mathrm~rpm. The diameter of the disk is ________ mathrm~m.
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QUESTION #25 Torque and Equilibrium
A cube having a side of 10mathrm~cm with unknown mass and 200mathrm~gm mass were hung at two ends of an uniform rigid rod of 27mathrm~cm long. The rod along with masses was placed on a wedge keeping the distance between wedge point and 200mathrm~gm weight as 25mathrm~cm. Initially the masses were not at balance. A beaker is placed beneath the unknown mass and water is added slowly to it. At given point the masses were in balance and half volume of the unknown mass was inside the water. (Take the density of unknown mass is more than that of the water, the mass did not absorb water and water density is 1mathrm~g/cm^3.) The unknown mass is ________ mathrmkg.
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JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)
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