Question #103cf

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Answer 1 · 2016-09-10T11:15:33

Distance covered in one revolution $=$ One circumference
$=2pir$ . Inserting given value we get
Distance coverd in one revolution $=2pixx5$ .
$:.$ Distance moved in three revolutions $=3xx2pixx5~~94.2cm$ .
We know that displacement $Deltavecr$ after one revolution $=0$ , as body moving in circular motion is back to its original location.
$=>$ Displacement $Deltavecr$ after three revolutions $=0$