2006
Physics
67e856d33cf20db308447ec1
A nail is pulled from a wall with a string tied to the nail. If the string is inclined at an angle of 30oC to the wall and the tension in the string is 50N, the effective force used in pulling the nail is:
A.
25N
B.
25√3 N
C.
50N
D.
50√3N
Correct Answer: 25N
Explanation
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