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Calculate the work done by gravity as a 3.9 kg object is moved from point a to point b

Calculate the work done by gravity as a 3.9 kg object is moved from point a to point-example-1
User Sevenseacat
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1 Answer

24 votes
24 votes

Given:

The mass of the object, m=3.9 kg

To find:

The work done by gravity.

Step-by-step explanation:

The work done by gravity does not depend on the path in which the object is brought from point A to point B. The work done depends only on the height difference between point A and point B.

From the figure, the height difference between point A and point B is h=2 m

The work done by the gravity when the object is moved from point A to point B is given by,


W=mgh

Where g is the acceleration due to gravity.

On substituting the known values,


\begin{gathered} W=3.9*9.8*2 \\ =76\text{ J} \end{gathered}

Final answer:

The work done by the gravity on the object is 76 J.

User Eblume
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