[Solved] The work done on an object does not depend upon the:

1.  Angle between force and displacement

2. Force applied

3. Initial velocity of the object

4. Displacement

Answer (Detailed Solution Below)

Free

10 Qs. 10 Marks 8 Mins

Concept:

Work:

• Work is said to be done by a force on an object if the force applied causes a displacement in the object.
• The work done by the force is equal to the product of force and the displacement in the direction of the force.
• Work is a scalar quantity.
• Its SI unit is Joule(J).

\(⇒ W=Fx\times cosθ\)    

Explanation:

• So, From the expression of work, it is very clear that the work done depends upon, the applied force, displacement and angle between them.
• It does not depend upon the initial velocity of the object.

So, the correct option is the Initial velocity of the object.

Mistake Points

• The work-energy theorem says work done is equal to a change in Kinetic energy. 
• So, it seems the work depends upon initial velocity, but in actual it depends upon the change in kinetic enrgy and hence change in speed not initial velocity.