8.Mechanical Properties of Solids
medium

$5m$ લંબાઇના તાર પર $10kg$ દળ લટકાવતા તેની લંબાઇ $1mm$ વધે ,તો તારમાં  ......... $joule$ ઊર્જા સંગ્રહ થય હશે?

A

$0$

B

$0.05$

C

$100$

D

$500$

Solution

(b) $W = \frac{1}{2} \times F \times l = \frac{1}{2}mgl$

$ = \frac{1}{2} \times 10 \times 10 \times 1 \times {10^{ – 1}} = 0.05\,J$

Standard 11
Physics

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