Equations of Rotational Motion Video Lessons

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Problem: A disk is rotating at 150 rpm. Answer the following questions: (a) What angle, in radians, does the disk rotate through in 25 s if the angular speed is constant? (b) If a brake is applied to the disk, and it takes 5 revolutions to stop, what was the angular acceleration applied by the break, in rad/s2?

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Problem Details

A disk is rotating at 150 rpm. Answer the following questions:

(a) What angle, in radians, does the disk rotate through in 25 s if the angular speed is constant?

(b) If a brake is applied to the disk, and it takes 5 revolutions to stop, what was the angular acceleration applied by the break, in rad/s2?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Equations of Rotational Motion concept. You can view video lessons to learn Equations of Rotational Motion. Or if you need more Equations of Rotational Motion practice, you can also practice Equations of Rotational Motion practice problems.

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Our expert Physics tutor, Jeffery took 4 minutes and 41 seconds to solve this problem. You can follow their steps in the video explanation above.

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Based on our data, we think this problem is relevant for Professor Efthimiou's class at UCF.