# Rotational motion

1. Jan 25, 2007

### ritwik06

the quantity of rotational motion that plays same role as that of mass in linear motion is _____________---

2. Jan 25, 2007

### rsk

clue: starts with I

3. Jan 25, 2007

### ritwik06

I dont think so, its either angular momentum, angular frequency, moment of inertia or kinetic energy.

4. Jan 26, 2007

### P3X-018

And one of those quantities is usually denotated by $I$.