A) 67.5 J
B) 85 J
C) 102 J
D) 7.5 J
Correct Answer: A
Solution :
[a] Net displacement is \[\left( 3 \hat{i}+3\hat{j} \right)\] so work done \[= \vec{F}.\Delta \vec{s} = 11.25\left( \hat{i}+\hat{j} \right).\left( 3 \hat{i}+ 3\hat{j} \right)\] \[= 33.75 \times 2=67.50 J\]You need to login to perform this action.
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