A) \[-30\,\,J\]
B) \[-48\,\,J\]
C) \[-49\,\,J\]
D) \[-59\,\,J\]
Correct Answer: C
Solution :
\[W=F\,\,S\cos \theta =mg\,\,S\,\,\cos \theta \] (\[\theta ={{180}^{o}}\]since \[F\] and \['S'\] are in the opposite directions)You need to login to perform this action.
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