1.

Three forces having magnitudes 5,4 and 3 units act on a particle in the directions 2bari-2barj-bark , bari+2barj+2bark and 2bari+barj-2bark respectively and the particele gets displaced from the point A whose position vector is6bari-2barj+3bark to the point B whose position vector is 9bari+7barj+5bark then the work done by these forces is

Answer»

9 UNIT
21 unit
30 unit
45 unit

Answer :A


Discussion

No Comment Found