In case of negative work the angle between the force and displacement is

GP Work Energy

In case of negative work the angle between the force and displacement is

  1. 45°
  2. 90°
  3. 180°

Answer

Work done, W = F.d cos θ

Work done at θ = 0°

W = F.d cos 0° = F.d

For angle θ = 0°, the work done is positive, so it is not true.

For angle θ = 45°, W = F.d/√2

In this case also, work done is positive, so it is not true.

Work done at θ = 90°, W = 0

So, it is not true.

Now, work done at θ = 180°, W = -F.d

For negative work, the angle between the force and displacement should be 180°.

The correct option is D.