Question

2. What is the work done in the situation shown below ?​

Answer 1

Given,

Two blocks with a distance S apart. A force F is applied to the block.

To find,

The work done in the situation.

Solution,

We know the equation of work done by a force is Work = Force × Displacement × CosΘ.

⇒ Work = F × S × Cos(0°)

Cos(0°) = 1.

⇒ Work = F× S

Hence, work done to displace the block by 'S' distance is F.S.

Answer 2

Work done in the situation shown below:

Explanation:

• Work done = F.S
• W = FScosθ
• The angle between work done and displacement is 90°
• W = FScos90°
• W = 0
• ∴ Work done = 0.