JEE Main 2007 Physics question
A body weighing 13 kg is suspended by two strings 5 m and 12 m long, their other ends being fastened to the extremities of a rod 13 m long. If the rod be so held that the body hangs immediately below the middle point. The tensions in the strings are
Answer: (3)
Solution
Since , the strings meet at a right angle. The body P is vertically below the midpoint M of the rod, so PM (vertical) is the median to the hypotenuse, of length 6.5 m. The 5 m string makes angle α with the vertical where $α =
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