A crane with a steel cable of length 11 m and radius 2.0 cm is employed to lift a block of concrete of mass 40 tons in building site. Young's Modulus of steel is 2.0 xx 10^(11) Pa, what will be roughly the increase in the length of the cable while lifting the block ? (Take g = 10 ms^(-2))

A crane with a steel cable of length 11 m and radius 2.0 cm is employe

1.	A crane with a steel cable of length 11 m and radius 2.0 cm is employed to lift a block of concrete of mass 40 tons in building site. Young's Modulus of steel is 2.0 xx 10^(11) Pa, what will be roughly the increase in the length of the cable while lifting the block ? (Take g = 10 ms^(-2))
Answer» 0.75 cm 1.25 cm 1.75 cm 2.50 cm Solution :`Deltat=F/A.L/Y=(40xx1000xx10xx11)/(PI.(0.02)^(2)xx2xx10^(11))` `=(4xx11)/(pixx4xx2)xx10^(-2)=1.75xx10^(-2)m` `=1.75cm` So CORRECT choice is (C).

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A crane with a steel cable of length 11 m and radius 2.0 cm is employed to lift a block of concrete of mass 40 tons in building site. Young's Modulus of steel is 2.0 xx 10^(11) Pa, what will be roughly the increase in the length of the cable while lifting the block ? (Take g = 10 ms^(-2))

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