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Important Questions: Basic concepts of rotational motion, moment of a force, torque, angular momentum, conservation of angular momentum and its applications for JEE

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The most important Basic concepts of rotational motion, moment of a force, torque, angular momentum, conservation of angular momentum and its applications questions for JEE cover conceptual traps, standard results, and numerical patterns from Basic concepts of rotational motion, moment of a force, torque, angular momentum, conservation of angular momentum and its applications. Goodmarks provides 31+ high-yield MCQs with full solutions.

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Part of Rotational Motion in JEE Main Physics.

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Q1PhysicsUnit 5: Rotational Motion
Which of the following laws are conserved, if the areal acceleration is zero
Q2PhysicsUnit 5: Rotational Motion
Calculate total moment of the two forces about O\boldsymbol{O}
Q3PhysicsUnit 5: Rotational Motion
When there is no external torque acting on a body moving in an elliptical path, which of the following quantities remains constant?
Q4PhysicsUnit 5: Rotational Motion
A solid sphere is rotating in free space. If the radius of the sphere is increased keeping the mass same without applying any external force, which one of the following will not be affected?
Q5PhysicsUnit 5: Rotational Motion
If the earth shrinks to half of its radius without changing its mass, the duration of the day will be
Q6PhysicsUnit 5: Rotational Motion
A sphere rolls without sliding on a rough inclined plane (only mg and contact forces are acting on the body). The angular momentum, of the body:
Q7PhysicsUnit 5: Rotational Motion
A swimmer while jumping into water from a height easily forms a loop in air, if
Q8PhysicsUnit 5: Rotational Motion
Moment of inertia of a body about an axis is 4kgm2.4 k g m^{2} . The body is initially at rest and a torque of 8 N mm starts acting on it along the same axis. Work done by the torque in 20s,20 s, in joules, is :

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Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

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Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

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