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 solution


Work is said to be done when a force applied to an object moves that object. Work done is generally referred to in relation to the force applied while energy is used in reference to other factors such as heat.

  • Work done by gravity depends solely on the vertical displacement of the body.
  • It doesn’t rely on the trail of the body.

Therefore, work done by gravity is given by the expression,

W= m × g × h


Vertical displacement, h = 0

∴ W= m× g × zero

W = 0

Therefore the work done on the body by gravity is therefore zero.

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