A) 100 J
B) 200 J
C) 300 J
D) 250 J
Correct Answer: A
Solution :
\[S=\overrightarrow{{{r}_{2}}}-\overrightarrow{{{r}_{1}}}\] \[W=\overrightarrow{F}\,.\,\overrightarrow{S}\] \[=(4\hat{i}+\hat{j}+3\hat{k})\,.\,(11\hat{i}+11\hat{j}+15\hat{k})\] \[=(4\times 11+1\times 11+3\times 15)\,=100\,J.\]You need to login to perform this action.
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