Figure 5 shows a uniform rod 4 m and of mass 2 kg. It is pivoted 1 m from one end and balanced horizontally by a string attached near the other end

      

Figure 5 shows a uniform rod 4 m and of mass 2 kg. It is pivoted 1 m from one end and balanced horizontally by a string attached near the other end
balance4182017342.jpg
Determine the position where a mass of 5 kg should be placed on the rod so that the rod remains horizontally by a string attached near the other end.

  

Answers


John
Clockwise moment = anticlockwise moment

20 N x 1 = X x 50

X = $\frac{20\times 1}{50}$ = 0.4 m; position 0.4 m(or 40 cm) from the pivot
johnmulu answered the question on April 18, 2017 at 12:47


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