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Sunny_sXe [5.5K]
2 years ago
7

A block of mass m is pushed up against a spring, compressing it a distance x, and the block is then released. The spring project

s the block along a frictionless horizontal surface, giving the block a speed v. The same spring projects a second block of mass 4m, giving it a speed of 5v. What distance was the spring compressed in the second case?
Physics
1 answer:
Gwar [14]2 years ago
3 0

Answer:

x' = 10 x

Explanation:

By energy conservation we know that spring energy is converted into kinetic energy of the block

so we will have

\frac{1}{2}kx^2 = \frac{1}{2}mv^2

so we will have

v = \sqrt{\frac{k}{m}}(x)

now we will have same thing for another mass 4m which moves out with speed 5v

so we have

5v = \sqrt{\frac{k}{4m}}(x')

now from above two equations we have

\frac{5v}{v} = \frac{x'}{2x}

so we have

x' = 10 x

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D, the lithosphere. (CRUST AND UPPER MANTLE)

Explanation:

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A ball dropped from a bridge takes three seconds to reach the water below how far is the bridge above the water?
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<u>Given that:</u>

Ball dropped from a bridge at the rate of 3 seconds

Determine the height of fall (S) = ?

      As we know that, S = ut + 1/2 ×a.t²

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Answer:

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Answer:

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