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3 years ago

What is the work done by gravity as a 10 kg object falls from rest at 12m to 5m?

Physics

1 answer:

Mama L [17]3 years ago

5 0

Answer: 686 joules

Explanation:

Work done = ?

Mass of fallen object = 10 kg

Height = (12m - 5m) = 7metres

(The height is 7metres because the object fell from an height of 12m to 5m)

Acceleration due to gravity g = 9.8m/s2

Workdone = Mass x Acceleration due to gravity x height

= 10kg x 9.8m/s2 x 7 metres

= 686 joules

Thus, the work done by gravity is 686 joules

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The work done is given by 742.5 J while the coefficient of kinetic friction between the block and the surface is 0.46.

The work done is given by the use of the formula;

W = F * x

Where;

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W = 150 N * 4.95 m = 742.5 J

Now;

The coefficient of kinetic friction is given by;

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μ = 0.46

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2 years ago

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So here momentum of the system will remain conserved

so here we can say

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3 years ago

What is the unit of k (spring constant) in SI system?

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Answer:

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4 years ago

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3 years ago

If you are pushing on a box with a force of 20 N and there is a force of 7 N on the box due to sliding friction, what is the net

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What is the work done by gravity as a 10 kg object falls from rest at 12m to 5m?​

What is the work done by gravity as a 10 kg object falls from rest at 12m to 5m?