Saved Bookmarks
| 1. |
Calculate the power of a crane in watts, which lifts a mass of 100 kg to a height of 10 m in 20 s. |
|
Answer» SOLUTION :m = 100 kg h =10 m t = 20 s Power, P = `U/t = (mgh)/t ( :. U = mgh )` `(100 XX 9.8 xx10)/20` `= 5xx98=490W` |
|