A force-time graph for a linear motion is shown in figure where the segments are circular. The linear momentum gained between zero and 8 second is
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a
−2π newton×second
b
Zero newton×second
c
+4π newton×second
d
−6π newton×second
answer is B.
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Detailed Solution
As the area above the time axis is numerically equal to area below the time axis therefore net momentum gained by body will be zero because momentum is a vector quantity.