Q 39. Two books of mass 1 kg each are kept on a table, one over the other. The coefficient of friction on every pair of contacting surfaces is 0.3. The lower book is pulled with a horizontal force F. The minimum value of F for which slip occurs between the two books is
(A) zero
(B) 1.06 N
(C) 5.74 N
(D) 8.83 N
Answer: (D)
Explanation:
