Q.

An Indian rubber cord 10m Long is suspended vertically. How much does it stretch under its own weight? (Density of rubber =1500 kg/m3,Y=5×108 N/m2,g=10 m/s2)

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a

15×10-2m

b

15×10-5 m

c

15×10-4 m

d

15×10-3 m

answer is A.

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Detailed Solution

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e=ρgL22Y=15×10-4 m

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