Saved Bookmarks
| 1. |
The power of an engine is 20 KW what time will be taken in Lifting 100km body to a height of 50 m |
| Answer» WORK DONE / TimePower = 20 kW or 20,000 W✪ ✩ ✬ ✮ ✭ ✯ ✰ ✹ ✸ ✷ ✶ ✵Here, Work done = F s COS SINCE, cos 0° = 1 and F = maWork done = ma × s= 100 kg × 10 m/s² × 50 m= 50,000 J✪ ✩ ✬ ✮ ✭ ✯ ✰ ✹ ✸ ✷ ✶ ✵20,000 W = 50,000 J / TimeTime = 50,000 J / 20,000 W= 2.5 s | |