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| 1. |
If a body complete one round on a circular path of radius 7 metre in 40 seconds and find the distance and displacement 180 second? |
| Answer» E in 1 rev. =2×pie×r=2×22/7×7=2×22=44 mno.of REVOLUTION in 180 sec=180/40=4.5 rev.distance covered in 4.5 rev.= 44×4.5=198 mdisplacement =DIAMETER of circle =2r=2×7=14 m | |