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A partial moving along a circle such that it complete one revolution in 40s .In 2min 20sec the ratio displacement /distance is?
Verified Answer
A partial moving along a circle such that it complete one revolution i...
Radius of circular path= R
Time = 2 min20sec=140sec.
Distance covered in 1 sec = 2 π R
Time for one revolution =40sec
Revolution completed in 140 sec= 140/40=3.5
DISTANCE covered in 3.5 revolution =3.5x2 π R
=7 π R meters. 
Displacement in 3.5 revolution =2R meter. ( Shortest distance between initial and final distance).
Ratio of displacement to distance:
2R/ 7πR
=2/7 π
This question is part of UPSC exam. View all NEET courses
Most Upvoted Answer
A partial moving along a circle such that it complete one revolution i...
2min 20 second =140 second time required to complete one revolution = 40 second 140 second =120second +20 second = 3revolution +1/2 revolution means it will be at diametrically opposite direction. so displacement =2*radiusdistance= 3*perimeter+1/2pereter=7πradiusratio =2/7π
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A partial moving along a circle such that it complete one revolution in 40s .In 2min 20sec the ratio displacement /distance is?
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