A) 6
B) \[6\sqrt{6}\]
C) \[\sqrt{6}\]
D) 12
E) \[2\sqrt{6}\]
Correct Answer: A
Solution :
Displacement \[=(3-2)\hat{i}+(1+1)\hat{j}+(2-1)\hat{k}\] \[=\hat{i}+2\hat{j}+\hat{k}\] Force \[=\sqrt{6}(\hat{i}+2\hat{j}+\hat{k})\] \[=(\hat{i}+2\hat{j}+\hat{k})\] \[\therefore \]Work done\[=(\hat{i}+2\hat{j}+\hat{k}).(\hat{i}+2\hat{j}+\hat{k})\] \[=6\]You need to login to perform this action.
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