JEE Main Physics question
A metre long light rod is suspended from a rigid support horizontally by means of two vertical wires of equal length. One wire with area of cross section is made of steel while another with area of cross-section is made of brass. Find the position along the rod from the steel wire in cm at which a weight might be hung to produce equal strains in both the wires. ( and )
Answer: 50
Solution
Equal strain: . Using , :
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