Doubt from Circular motion

Ans should be d , ithink

Average force =m(vj- v(-i))/t

According to this it should be option C na
m(vj + vi)
@Achyut_2020

THink in sense of direction of centripetal forces acting through and see their average.

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@Amritaansh_2020 I agree with your solution
But can you explain what is wrong in @Achyut_2020 method?

Sorry i forgot to write , it will be =v(-j)-v(-i) @Gaurav_2020_3

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Yeah :shushing_face::shushing_face::shushing_face:my mistake too didn't noticed it.