A force $\overrightarrow F = (5\hat i + 4\hat j)$ $N $ acts on a body and produces a displacement $\overrightarrow S = (6\hat i - 5\hat j + 3\hat k)$ $m$ . The work done will be......$J$
A force $\overrightarrow F = (5\hat i + 4\hat j)$ $N $ acts on a body and produces a displacement $\overrightarrow S = (6\hat i - 5\hat j + 3\hat k)$ $m$ . The work done will be......$J$
$10 $
$20 $
$30$
$40 $
A force $\overrightarrow F = (5\hat i + 4\hat j)$ $N $ acts on a body and produces a displacement $\overrightarrow S = (6\hat i - 5\hat j + 3\hat k)$ $m$ . The work done will be......$J$
$W = \overrightarrow F .\overrightarrow s = (5\hat i + 4\hat j).(6\hat i - 5\hat j + 3\hat k)$$ = 30 - 20 = 10\,J$