A.  (g / 4) ( t1 + t2 ) 2

B.  g ( (t1 + t2) / 4 ) 2

C.  2g ( (t1 + t2) / 4 ) 2

D.  (g / 4) (t1 t2)

1
Correct Answer :
2g ( (t1 + t2) / 4 ) 2
Explanation :
No Explanation available for this question

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