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Sagot :
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
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