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brake4country
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Could some please help me with this problem?
Boards X and Y are both massless and 4 m in length. A 4 N force is applied to board Y as shown. Board X is held stationary. The two boards are nailed together at 1 m from the left end of board Y. If the boards do not move, what is the static frictional force between the nail and board X?
(A) 4 N
(B) 8 N
(C) 12 N
(D) 16 N
Boards X and Y are both massless and 4 m in length. A 4 N force is applied to board Y as shown. Board X is held stationary. The two boards are nailed together at 1 m from the left end of board Y. If the boards do not move, what is the static frictional force between the nail and board X?
(A) 4 N
(B) 8 N
(C) 12 N
(D) 16 N