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iris [78.8K]
4 years ago
15

Approximately what is the gravitational energy of a 100 kg person at the top of a 10 meter ladder?

Physics
1 answer:
____ [38]4 years ago
8 0
The gravitational energy is 9800 Joules.

Formula: Mass • Gravity • Height
100kg• 9.8m/s2•10m

=9800Joules
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Answer:

X Component is 183.85N

Explanation:

The x component of the force on the block due to the rope;

X = F cos @ where if is the force, @ is the angle mad with the block.

X = F cos @

X = 240 cos 40

Cos 40= 0.7660, so

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4 years ago
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Answer:

Explanation:

An impulse results in a change of momentum

If the wagon and dog both stop, they must have had equal and opposite momentums

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F = mΔv/Δt = m(v₁ - v₀)/(t₁ - t₀)

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F = 55(2.1)/0.1 = 1155 N

We could have also figured the dog's initial velocity and used the dog's mass in the equation as well. Result would be identical.

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