jee_main_2025_02_april_morning - Rotational Motion Topics

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QUESTION #3 Moment of Inertia and Torque
A cord of negligible mass is wound around the rim of a wheel supported by spokes with negligible mass. The mass of wheel is 10mathrm~kg and radius is 10mathrm~cm and it can freely rotate without any friction. Initially the wheel is at rest. If a steady pull of 20mathrm~N is applied on the cord, the angular velocity of the wheel, after the cord is unwound by 1mathrm~m, would be: {{IMG1}}
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QUESTION #13 Moment of Inertia and Torque
A square Lamina OABC of length 10mathrm~cm is pivoted at 'O'. Forces act on the Lamina as shown in the figure. If the Lamina remains stationary, then the magnitude of F is: {{IMG1}}
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QUESTION #16 Moment of Inertia and Torque
Moment of inertia of a rod of mass 'M' and length 'L' about an axis passing through its center and normal to its length is 'α'. Now the rod is cut into two equal parts and these parts are joined symmetrically to form a cross shape. Moment of inertia of cross about an axis passing through its center and normal to plane containing cross is:
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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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