Saved Bookmarks
| 1. |
A body takes 5½ revolution of circle radius 1m in 5sec find its average speed |
|
Answer» Explanation: circle of RADIUS 1 mNo of REVOLUTION = 5.5Time =5secNow...To find average speedDistance = 5 × CIRCUMFERENCE +circumference/2 ....(1)Circum.. = 2PIE r2 ×22/7×1=44/7 mPutting this value in (1)5 × 44/7 + 44/7//2220/7 + 44/14440 + 44//14=484/14=242/7 Now average speed = distance /time =242/7//5=242/35 Hope it help |
|