A) 10 N, 11 N
B) 10 N, 6 N
C) 10 N, 10 N
D) can't calculate due to insufficient data
Correct Answer: C
Solution :
By drawing the free body diagram of point B, let the tension in the section BC and BF are \[{{T}_{1}}\,\,and\,\,{{T}_{2}}\] respectively. From Lami?s theorem \[\frac{{{T}_{1}}}{\sin \,\,120{}^\circ }\,\,=\,\,\frac{{{T}_{2}}}{\sin \,120{}^\circ }\,\,=\,\,\frac{T}{\sin \,120{}^\circ }\] \[\Rightarrow \,\,T={{T}_{1}}={{T}_{2}}=10\,N\]You need to login to perform this action.
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