A uniform force of ( 3hat(i)+hat(j)) N acts on an particle of mass 2 kg . Hence the particleis displacedfrom position (2hat(i)+hat(k))m to position (4hat(i)+3hat(j)-hat(k))m . Thework done by the force on the particle is

A uniform force of ( 3hat(i)+hat(j)) N acts on an particle of mass 2 k

1.	A uniform force of ( 3hat(i)+hat(j)) N acts on an particle of mass 2 kg . Hence the particleis displacedfrom position (2hat(i)+hat(k))m to position (4hat(i)+3hat(j)-hat(k))m . Thework done by the force on the particle is
Answer» 15 J 9 J 6 J 13 J Solution :`Delta vec(r ) = vec(r_(2)) -vec(r_(1))` ` = 4hat(i) +3hat(j) +hat(k) -2hat(i) - hat(k) = 2hat(i) +2hat(j) ` ` :. ` WORK W ` = vec(F). Delta vec(r )` ` = ( 3hat(i) +hat(j)) . (2hat(i)+3hat(j))` `= 6+3 ` ` :. W = 9 J `