A half-metre rule of mass 50g balances off-centre when a 20g mass is suspended at the 2 cm mark.

      

A half-metre rule of mass 50 g balances off-centre when a 20 g mass is suspended at the 2 cm mark. Determine the position of the pivot.

  

Answers


Raphael
Sum of clockwise moment = Sum of anti-clockwise moment

20×101000=23x1000=50×101000×x100

0.2100(23x)=0.5x100

4.6 - 0.2x = 0.5x

x= 6.5 cm
raphael answered the question on January 14, 2017 at 14:14


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