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## What is the work done by gravity on a 4 kg ball a. as it goes from point B to point A? b. As it goes from point A to C? (h

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## Answers ( )

Answer:a. Work done = 313.92 Joules

b. Work done = 439.49 Joules

Explanation:Work done = Force x distance

Where: Force = mass x gravity

Thus,

Work done = Force x gravity x distance

The earth’s acceleration to gravity = 9.81 m/[tex]s^{2}[/tex].

a. The work done as it goes from B to A can be determined as;

work done = 4 x 9.81 x 8

= 313.92 Joules

b. The distance between A and C is the total horizontal distance covered from A to C.

i.e 8 + 3.2 = 11.2 m

The work done as the ball goes from point A to C can be determined as:

work done = 4 x 9.81 x 11.2

= 439.488

work done = 439.49 Joules