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Q.

A rope 1 cm in diameter breaks, if the tension in it exceeds 500N. The maximum tension that may be given to similar rope of diameter 3 cm is

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a

500 N

b

2000 N

c

4500 N

d

3000 N

answer is C.

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Detailed Solution

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Breaking stress for both ropes would be same.

Tmax1π×122=Tmax2π322

Tmax2=9×Tmax1=4500 N

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