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Figure 12 shows a set up used to determine the mass of a solid S. The rod is pivoted at its centre of gravity C.

      

Figure 12 shows a set up used to determine the mass of a solid S. The rod is pivoted at its centre of gravity C.
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i) State two measurements that need to be made to determine the mass of solid S.
ii) Write an expression to show how the measurements in (i) above are used to obtain the mass of S.

  

Answers


John
i) Length from B to C and from C to D

ii) Clockwise moments = Anticlockwise moments

CD x S = BC x 100 g

S = $\frac{BC \times 100}{CD}$
johnmulu answered the question on April 19, 2017 at 07:21


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