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DaniilM [7]
2 years ago
6

A force of 15 N is applied to a spring, causing it to stretch 0. 3 m. What is the spring constant for this particular spring? N/

m.
Physics
1 answer:
puteri [66]2 years ago
4 0
Get tyy guy hhh guy ggh fggg
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F = 5253.7 N

Explanation:

As we know that tension force in the string will be equal to the centripetal force on the string

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T = \frac{mv^2}{L}

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68 = \frac{m(16.53^2)}{3.7}

now we have

68 = 73.8 m

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F = \frac{mv^2}{r}

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3 years ago
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A solid block, with a mass of 0.15kg, on a frictionless surface is pushed directly onto a horizontal spring, with a spring const
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Answer:

16.1 m/s

Explanation:

We can solve the problem by using the law of conservation of energy.

At the beginning, the spring is compressed by x = 35 cm = 0.35 m, and it stores an elastic potential energy given by

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

where k = 316 N/m is the spring constant. Once the block is released, the spring returns to its natural length and all its elastic potential energy is converted into kinetic energy of the block (which starts moving). This kinetic energy is equal to

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Since the energy must be conserved, we can equate the initial elastic energy of the spring to the final kinetic energy of the block, and from the equation we obtain we can find the speed of the block:

\frac{1}{2}kx^2=\frac{1}{2}mv^2\\v=\sqrt{\frac{kx^2}{m}}=\sqrt{\frac{(316 N/m)(0.35 m)^2}{0.15 kg}}=16.1 m/s

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A dog starts at position x=2.50m, and undergoes a displacement of 8.25m. What is its final position?
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Two point charges are separated by a distance d. The first has a charge of
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D. The new electric potential energy is 1/2as strong as the original

electric potential energy.

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