Answer to Question #144267 in Classical Mechanics for Fujai Muhammed

Question

Will it be negative work when force applied make an angle of 270 with displacement

Answer 1

Answer

Work done by force can be calculated as

$W=Fdcos\theta$

$\theta=270°$

So work done will be

$W=Fdcos270°\\W=0J$

So there will be no any negative work done if force is at 270° from displacement. So work will be not negative.