THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Rotational kinetic energy
Energy of a spinning disc
A uniform solid disc has mass 2 kg, radius 0.50 m and angular speed 8 rad/s about its symmetry axis.
Find its rotational kinetic energy.
Organize the givens & assumptions
- M = 2 kg
- R = 0.50 m
- ω = 8 rad/s
Uniform solid disc rotating about its fixed symmetry axis; rigid-body motion, no centre-of-mass translation.
- A
- B
- C
- D
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