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Physics

1 answer:

soldi70 [24.7K]3 years ago

6 0

Answer:

OD. The process of cutting down irrelevant information so only the information that is useful for particular purpose remains

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If a 40 kg gymnast and a 400 kg sumo wrestler each dropped from 1 m above the trampoline, find the final position of each athlet

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When you drop an object from some height on the spring objects initial potential energy is converted to kinetic energy, this kinetic energy is then used to compress the spring. Once all the energy is used the spring stops compressing and starts oscillating.
We need to find how much the spring compressed in both cases.
From the above analysis, we can conclude that potential energy in the gravitational field has to be equal to the potential energy of compressed spring.
$mgh=\frac{1}{2}kx^2$
We solve for x (in our case h=1):
$mg=\frac{1}{2}kx^2\\
x^2=\frac{2mg}{k}\\
x=\sqrt{\frac{2mg}{k}}$
Now we just have to plug in the numbers:
$$$Sumo\ wrestler(m=400kg):x=\sqrt{\frac{2mg}{k}}=0.81m\\
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$$$ Gymnast(m=40kg):x=\sqrt{\frac{2mg}{k}}=0.26m\\$

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Sveta_85 [38]

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A. "The electric force vector is along the direction of the electric field, whereas the magnetic force vector is perpendicular to the magnetic field."

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Explanation:

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