A) 360 J
B) 240 J
C) \[-240J\]
D) \[-360J\]
Correct Answer: D
Solution :
Work done \[=\int{F.dx}\] Given, \[F=-(6{{x}^{3}})iN\] \[\therefore \] \[W=-\int_{-2}^{4}{6{{x}^{3}}dx}\] \[W=-6\left[ \frac{{{x}^{4}}}{4} \right]_{-2}^{4}\] \[W=-\frac{6}{4}[{{(4)}^{4}}-{{(2)}^{4}}]\] \[W=-1.5\times 240=-360\,J\]You need to login to perform this action.
You will be redirected in
3 sec