A) 16 J
B) 64 J
C) 32 J
D) 48 J
Correct Answer: B
Solution :
Work done\[=\overrightarrow{F}.\overrightarrow{d}\] \[=(4\hat{i}+\hat{j}+3\hat{k}).[(14-3)\hat{i}+(13-2)\hat{j}\] \[+(9-6)\hat{k}]\] \[=(4\hat{i}+\hat{j}+3\hat{k}).(11\hat{i}+11\hat{j}+3\hat{k})\] \[=44+11+9=64J\]You need to login to perform this action.
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