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Hindi
5.Work, Energy, Power and Collision
normal

$2m$  લંબાઇ ધરાવતી ચેઇનનો અડધો ભાગ ટેબલની કિનારી પર લટકે છે ............ $\mathrm{m/s}$

A

$2 $

B

$4$

C

$6$

D

$8$

Solution

$v = \sqrt {gL\left( {1 – \frac{1}{{{n^2}}}} \right)} $$ = \sqrt {10 \times 2\left( {1 – \frac{1}{{{{(2)}^2}}}} \right)} $$ = \sqrt {15} = 3.87$  $≃ 4 m/s$

Standard 11
Physics

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