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Grade: 12th pass
        
A wire of mass 0.3gm is lying horizontal on water surface.surface tension is 70×10^-3N/m.  The maximum length of wire so that it may not sink is... . .... . .. .ANS: 2.1cm 
25 days ago

Answers : (1)

Darshini Prakash
28 Points
							
2S = F/L ; F=mg
(Where S=Surface tension; F=Force acting on the body; L=Length of the body)
Substituting the given values we get:
2(70*10-3 ) = (0.3*10-3)*10/L       (**WE SHOULD SUBSTITUTE ALL THE VALUES IN SAME UNITS**)
L=0.021m  or  L=2.1cm
 
25 days ago
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