A circular discof mass 4 kg and radius 1 m rolls on a smooth table with a uniform velocity of `0.5 ms^(-1)`. Calculate its (a) rotating K.E. (b) translational K.E.

Explanation

To solve the problem, we need to calculate both the rotating kinetic energy and the translational kinetic energy of the circular disk.

### Given Data:
- Mass of the disk, \( m = 4 \, \text{kg} \)
- Radius of the disk, \( r = 1 \, \text{m} \)
- Velocity of the disk, \( v = 0.5 \, \text{m/s} \)

### (a) Rotating Kinetic Energy
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