The figure below show a uniform metre rule balanced when pivoted at the 30cm mark under the conditions of forces as shown below.Calculate the weight...

      

The figure below show a uniform metre rule balanced when pivoted at the 30cm mark under the conditions of forces as shown below.
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Calculate the weight W of the rule.

  

Answers


sharon
Taking moments about the pivot point P
Sum of clockwise moment = W x 20 + 0.5 x 40
Sum of anticlockwise moment = 4.8 x 20
20W + 20 = 96
20W = 76
W = 3.8N
sharon kalunda answered the question on September 9, 2019 at 06:09


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