A body constrained to move in y-direction is subjected to a force given by vecF=(-2hat i +15hatj +6hatk) N. The work done by this force in moving the body a distance of 10 m along the y-axis is

A body constrained to move in y-direction is subjected to a force give

1.	A body constrained to move in y-direction is subjected to a force given by vecF=(-2hat i +15hatj +6hatk) N. The work done by this force in moving the body a distance of 10 m along the y-axis is
Answer» 20 J 150 J 160 J 190J Solution :Given `vec(F) = -2 hati + 15 hatj + 6hatk N` `VECS = 0hati + 10 hatj + 0hatk m` `:.` Work done = `vec(F).vec(S)` `= (-2hati + 15 hatj + 6 hatk) . (0hati + 10 hatj +0 hatk) = 150 J`.