A) \[U=-\frac{MB}{2}\]
B) \[U=-\sqrt{3}\,\,\,\frac{MB}{2}\]
C) \[U\,\,=\,\,\frac{MB}{2}\]
D) None of these
Correct Answer: C
Solution :
\[U\,\,=\,\,-MB\,\,cos\,\phi \] \[=-MB\text{ }cos\text{ }120\] \[=\,\,+\,\frac{MB}{2}\]You need to login to perform this action.
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