A) \[\frac{8}{3}J\]
B) \[\frac{19}{5}J\]
C) \[\frac{5}{19}J\]
D) \[\frac{3}{8}\,J\]
Correct Answer: A
Solution :
Given that, \[S=\frac{1}{3}{{t}^{2}}\] \[v=\frac{dS}{dt}=\frac{2}{3};a=\frac{{{d}^{2}}S}{d{{t}^{2}}}=\frac{2}{3}\] \[F=ma=3\times \frac{2}{3}=2N;\]Work \[=2\times \frac{1}{3}{{t}^{2}}\] At t = 2 Work \[=2\times \frac{1}{3}\times 2\times 2=\frac{8}{3}J\]
You need to login to perform this action.
You will be redirected in
3 sec
