Analogy between linear and rotational motion (AQA A-Level Physics): Flashcards

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Analogy between linear and rotational motion
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Linear mass (mm) corresponds to what in rotational motion?

Moment of inertia (II)

Units of moment of inertia

kg m⁻²

Linear velocity corresponds to what rotational quantity?

Angular velocity (omegaomega)

Units of angular velocity

rad s⁻¹

Force in linear motion corresponds to what in rotational?

Torque (TT)

Formula for torque in terms of force FF and distance rr

T=FrT = Fr

Formula for rotational kinetic energy

E_k = rac{1}{2}Iomega^2

Formula for angular momentum (LL)

L=IomegaL = Iomega

Units of torque

N m

Work done by torque TT through angular displacement heta heta

W=ThetaW = T heta

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