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Angular Momentum :: Discussion
| 2. | A hook of radius 2m weighs 100kg. It rolls along a horizontal floor so that its centre if mass has a speed of 20cm/s. How much work has to be done to stop it? | |
| A. | 5 J | |
| B. | 6 J | |
| C. | 2 J | |
| D. | 4 J | |
| Answer: Option D | |
| Explanation: | |
|
vcm=20cm/s = 0.20ms |
|
| Tutorial Link: |
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