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In this lesson, we will learn how to use the angular speed equation of a body moving in a circular path.
Q1:
A disc of radius 12.5 cm spins at constant angular speed, taking 15 s to complete each revolution. What is the speed of the disc on its outer rim? Give your answer in metres per second correct to four decimal places.
Q2:
What is the angular speed 𝜔 of a particle that took 5 seconds to complete a circular path at a constant speed of 28 m/s? Give your answer correct to three decimal places, and use that value to determine the radius 𝑟 of the circular path correct to one decimal place.
Q3:
A race car is moving at 311 km/h round a circular track of radius 997 m. Determine, correct to three decimal places, its angular speed in radians per second.
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