Question

An object is moving along $x-axis$ and the force of the object is given by $\overrightarrow{F}=\hat{i}-3\hat{j}+4\hat{k}.$ The object displaces $5m.$ Calculate work done.

Answer 1

Given that ,

Force acting on object , $\overrightarrow{F}=\hat{i}-3\hat{j}+4\hat{k}.$ .

Also the object is moving along $x-axis$

Displacement of the object , $\overrightarrow{S}=5\hat{i}$ m

$\therefore$ Work done by the object ,$W=\overrightarrow{F}\cdot \overrightarrow{S}=5J$