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Variation of G Due to Height and Depth

The greatest ...

Question

The greatest length of the wire made of material of breaking stress 8 x 10 $^{8}$ N / m $^{2}$ and density 8 x 10 $^{3}$ kg / m $^{3}$ that can be suspended from a rigid support without breaking is: $(g = 10 m / s^{2})$

1 k m

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0.1 k m

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10 k m

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100 k m

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Solution

The correct option is C $10 k m$
$S t r e s s = l e n g t h \times d e n s i t y \times g$
$l e n g t h = \frac{s t r e s s}{g \times d e n s i t y}$
$= \frac{8 \times 10^{8}}{10 \times 8 \times 10^{3}}$
$= 10^{4} c m$
$= 10 k m$

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Similar questions

8 \times 10^{8} N / m^{2}

8 \times 10^{3} k g m^{3}

(g = 10 m / s^{2})

6 \times 10^{6} N / m^{2}

8 \times 10^{3} k g / m^{3}

g = 10 m / s^{2}

6 \times 10^{6} N / m^{2}

8 \times 10^{3} N / m^{2}

g = 10 m / s^{2}

7.2 \times 10^{8} N / m^{2}

= 7800 k g / m^{3}

7800 k g / m^{3}

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