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Question

Give the equations of rotational motion.

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Solution

Linear MotionRotational Motion PositionxθAngular positionVelocityvωAngular velocityAccelerationaαAngular accelerationMotion equationsv=v0+atω=ω0+αt x=v0t+12at2θ=ω0t+12αt2 v2=v20+2axω2=ω20+2αθ Mass (linear inertia)mIMoment of inertiaNewtons second lawF=maτ=IαNewtons second lawMomentump=mvL=IωAngular momentumWorkFdτθWorkKinetic energy12mv212Iω2Kinetic energyPowerFvτωPower


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