8.Mechanical Properties of Solids
medium

$0.5\, mm$ વધારો કરવા માટે $2m$ લંબાઇ અને $2\,m{m^2}$ આડછેદ ના સ્ટીલના તારમાં કેટલું બળ લગાવવું પડે$?$  [$Y_{steel} = 2.2 \times {10^{11}}\,N/{m^2}]$]

A

$1.1 \times {10^5}\,N$

B

$1.1 \times {10^4}\,N$

C

$1.1 \times {10^3}\,N$

D

$1.1 \times {10^2}\,N$

Solution

(d) $F = \frac{{YAl}}{L} = \frac{{2.2 \times {{10}^{11}} \times 2 \times {{10}^{ – 6}} \times 5\, \times {{10}^{ – 4}}}}{2}$$ = 1.1 \times {10^2}N$

Standard 11
Physics

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