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Advocard [28]
3 years ago
14

Can someone help me

Mathematics
1 answer:
trapecia [35]3 years ago
7 0
This uses the properties of a 30-60-90 triangle.  the 90 m is opposite the 60 degree angle to convert to the side opposite the 30 divide 90 by \sqrt{3}
90 / \sqrt{3} = 51.96 m or B
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A truck weighing 150kN and travelling at 2m/sec impacts with a buffer
FrozenT [24]

The maximum compression of the spring is 0.276 m

Step-by-step explanation:

First of all, we calculate the spring  constant of the spring, by using Hooke's law:

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When the truck impacts with the spring, all the kinetic energy of the truck is converted into elastic potential energy of the spring, so we can write

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v = 2 m/s is the initial speed of the truck

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x is the compression of the spring

The mass of the truck can be found from its weight:

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x=\sqrt{\frac{mv^2}{k}}=\sqrt{\frac{(15,290)(2)^2}{8\cdot 10^5}}=0.276 m

Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

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