# Problem: A grinding wheel in the shape of a solid disk is 0.200 m in diameter and has a mass of 3.0 kg. The wheel is rotating at 2200 rpm about an axis through its center. a) What is its kinetic energy? b) How far would it have to drop in free fall to acquire the same amount of kinetic energy?

🤓 Based on our data, we think this question is relevant for Professor Krasnoslobodtsev's class at UN OMAHA.

###### Problem Details

A grinding wheel in the shape of a solid disk is 0.200 m in diameter and has a mass of 3.0 kg. The wheel is rotating at 2200 rpm about an axis through its center.

a) What is its kinetic energy?

b) How far would it have to drop in free fall to acquire the same amount of kinetic energy?

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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 Intro to Rotational Kinetic Energy concept. You can view video lessons to learn Intro to Rotational Kinetic Energy. Or if you need more Intro to Rotational Kinetic Energy practice, you can also practice Intro to Rotational Kinetic Energy practice problems.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Krasnoslobodtsev's class at UN OMAHA.