InterviewSolution
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InterviewSolution
| 1. |
A force F=2i+5j displace a body of displacement s=6i+9k find the work done |
| Answer» W=f.s W=(2x6)i +(5x0)j+(0x9)W=12+0+0=12J<br>W = F . d = ( 2 × 6 ) i + ( 5 × 9 ) j = 12 + 45= 57 J .( here , 9k is wrong, it should be either 9j or 5k in 1st one ). | |