Qstnid -5- A Mass Of 10 Kg Is At A Point A On A Table. It Is Moved To A Point B. If The Line Joining A And B Is Horizontal, What Is The Work Done On The Object By The Gravitational Force? Explain Your Answer. - 15: 2-work And Energy

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#5
A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your answer.
Ans : Since work done on the object by gravitational force depends upon change in the vertical height of the object. Vertical height of the object is not changing as the joining A and B is horizontal at the same height hence the work done is zero.