A) 80 N
B) 160 N
C) 240 N
D) 320 N
Correct Answer: A
Solution :
4 trips means 32 m \[t=\frac{d}{v}\,\,\,\Rightarrow \,\,v=\frac{d}{t}\,\,=\,\,\frac{32}{0.8}\,\,=\,\,40\,m/s\] \[v=\sqrt{\frac{T}{\mu }}\] \[\Rightarrow \,\,\,T\,\,=\,\,\mu {{v}^{2}}\] \[T=\frac{0.2}{4}\,\times {{(40)}^{2}}\,\,=\,\,\frac{2\times 16\times 10}{4}\] \[T\,\,=\,\,80\,N\]You need to login to perform this action.
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