A) \[\operatorname{n}=\frac{1}{2}\]
B) n=2
C) \[\operatorname{n}=\frac{1}{4}\]
D) n = 1
Correct Answer: B
Solution :
\[{{\operatorname{W}}_{1}}=MB\,\left[ Cos\,\,{{0}^{o}}-Cos\,\,90 \right]\] \[=MB\left[ 1-0 \right]\] \[{{\operatorname{W}}_{1}}=MB\] In second case ?.(1) \[{{\operatorname{W}}_{2}}=MB\,\left[ Cos\,\,{{0}^{o}}-Cos\,\,6{{0}^{\operatorname{o}}} \right]\] \[{{\operatorname{W}}_{2}}=\frac{MB}{2}\] ?.(2) \[\left( 1 \right)\div \left( 2 \right)\] \[\frac{{{W}_{1}}}{{{W}_{2}}}=2\]You need to login to perform this action.
You will be redirected in
3 sec