Question

Q4
Which of the following tasks shows that the person is
doing work?
O reading a book
O holding a heavy object
O pushing against a wall
O lifting a heavy object​

Answer 1

ANSWER

I think the Correct answer of this Question is Lifting a heavy Object

Answer 2

Among the following "Lifting a heavy object" is the task that shows the person doing work.

What is meant by work?

"An amount of energy is applied on an object to display it over a distance by an external force in the direction of the movement imposed on the object."

Explanation:

1. reading a book - According to this option, no object is moved from one place to another.
2. holding a heavy object - This option is also the same, the energy is used but the object is not relocated.
3. pushing against a wall - Here also, A force is applied but it is wasted, the wall cannot be moved.
4. lifting a heavy object​ - In this option, A force is imposed to lift an object. The object is shifted, so this is the task of doing the work.