Question

An object is displaced by 10 meters in the direction of applied force. If the applied force is 55N, what is the work done by the force?

Answer 1

Given :

➨ Displacement = 10m

➨ Magnitude of force = 55N

To Find :

➳ Work done by applied force.

Concept :

⇒ Work done by force is defined as the dot product of magnitude of applied force and displacement.

⇒ It is a scalar quantity having only magnitude.

⇒ SI unit : Joule (J)

Mathematically, W = F▪d = Fd cosΦ

(Φ denotes angle between applied force and displacement)

Calculation :

➠ W = Fd cosΦ

➠ W = (55)(10) cos 0°

➠ W = 550 × 1

➠ W = 550J

Answer 2

Answer:

Given:

• An object is displaced by 10 meters in the direction of applied force. If the applied force is 55N.

Find:

• What is the work done by the force?

Using formula:

• W = F × D.

Know terms:

• Work done = (W).
• Force = (F).
• Displacement = (D).
• Newton = (N).
• Joule = (J).

Calculations:

= Work done = 55 × 10

= Work done = 550 J

Therefore, work done is 550 Joules.