Question

In which situation is maximum work considered to be done by a force?

OA. The angle between the force and displacement is 180°
B.
The angle between the force and displacement is 90°.
C.
The angle between the force and displacement is 60°
D. The angle between the force and displacement is 45°.
E. The angle between the force and displacement is oº.

Answer 1

Option E

Step-by-step explanation:

As work is dot product of force and displacement

W=FdCos0

As Cos 0=1 so W=F.d(1)

W=F.d

as Cos 90=0 so no work will be done when angle between force and displacement is 90 degree. At angle between force and displacement is 180 degree then negative value com as Cos 180= -1