Question

An object of mass 10 kg is at a point A on a table. It is moved to a point B by a distance 5 m. If the line joining A and B is horizontal, then what is the work done on the object by gravitational force ?

• A. 50 J
• B. 100 J
• C. 60 J
• D. Zero

Answer 1

Answer: (D)

Zero

here work done is horizontal and gravitational force is down word.

So, As per formula,

W=F.S.Cos

$\theta$=$fscos90°$=0

Answer (D) Zero