Sub-topic 1
2026 · National Preliminary
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Moment of inertia of a uniform solid sphere
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Sub-topic 2
2024 · National Preliminary
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Moment of inertia of a uniform solid sphere
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Sub-topic 3
2026 · National Semifinal
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Radius of gyration of a solid sphere about a tangent (surface) axis
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Sub-topic 4
2026 · National One-Eighth
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Moment of inertia of a solid sphere about a diameter
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Sub-topic 5
2026 · National One-Eighth
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Speed from centripetal acceleration in circular motion
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Sub-topic 6
2026 · National One-Eighth
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Average torque from a change in angular momentum
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Sub-topic 7
2023 · National Preliminary
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Average torque from a change in angular momentum
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Sub-topic 8
2026 · National One-Eighth
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Moment of inertia of a thin cylindrical shell about its axis
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Sub-topic 9
2026 · National Preliminary
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Moment of inertia of a thin cylindrical shell about its axis
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Sub-topic 10
2018 · National Preliminary
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Moments/torque: effort needed on a lever
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Sub-topic 11
2018 · National One-Eighth
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Combined translational and rotational kinetic energy of a rolling cylinder
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Sub-topic 12
2024 · National One-Eighth
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Center of mass of a two-particle system from vector positions
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Sub-topic 13
2024 · National One-Eighth
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Balancing a uniform meter stick using moments
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Sub-topic 14
2026 · National One-Eighth
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Rotational kinetic energy of a solid cylinder spinning about its axis
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Sub-topic 15
2003 · National Semifinal
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Excess torque breaking a bolt during tightening
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Sub-topic 16
2013 · National Preliminary
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Conservation of angular momentum when net torque is zero (true/false)
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Sub-topic 17
2013 · National Preliminary
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Torque, not impulse, equals the rate of change of angular momentum (true/false)
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Sub-topic 18
2016 · National One-Eighth
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Moment of inertia of a spinning disk from angular momentum and angular velocity
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Sub-topic 19
2016 · National One-Eighth
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Net torque on a disk from moment of inertia and angular acceleration (derived from spin-up time)
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Sub-topic 20
2016 · National One-Eighth
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Moment of inertia of a disk from net torque and angular acceleration
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Sub-topic 21
2019 · National Preliminary
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Angular speed of a celestial body from its rotation period
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Sub-topic 22
2021 · National Quarterfinal
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Moment of inertia of a uniform sphere about a diameter, $I = \dfrac{2}{5}mr^2$
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Sub-topic 23
2021 · National Preliminary
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Time for angular speed to increase under constant angular acceleration
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Sub-topic 24
2022 · National Preliminary
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Moment of inertia from angular momentum and angular speed, $I = \dfrac{L}{\omega}$
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Sub-topic 25
2022 · National Preliminary
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True or false: a couple forms when equal/opposite forces lie along the same line
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Sub-topic 26
2022 · National Preliminary
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True or false: net torque from equal/opposite forces at the same point is zero
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Sub-topic 27
2022 · National Preliminary
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True or false: a couple forms when equal/opposite forces act at the same point
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Sub-topic 28
2022 · National Preliminary
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Torque about the origin from a force and position vector, $\boldsymbol{\tau} = \mathbf{r} \times \mathbf{F}$
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Sub-topic 29
2023 · National Preliminary
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Time to reach a given angular momentum under constant torque, from an initially stationary body
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Sub-topic 30
2023 · National Preliminary
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True or false: torque is the rate of change of angular momentum
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Sub-topic 31
2023 · National One-Eighth
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Riddle: moment of inertia, the rotational analog of mass
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