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Burka [1]
3 years ago
10

A 30 g mass is attached to one end of a 10-cm-long spring.

Physics
1 answer:
Usimov [2.4K]3 years ago
4 0

The value of the spring constant of the spring is 14.7 N/m.

The given parameters;

  • <em>mass attached to the spring, m = 30 g</em>
  • <em>length of the spring, L₀ = 10 cm</em>
  • <em>angular speed of the mass = 90 rpm</em>
  • <em>final length of the spring, L₁ = 12 cm</em>

The extension of the spring is calculated as follows;

\Delta x = L_1 - L_0\\\\\Delta x = 12 \ cm - \ 10 \ cm\\\\\Delta x = 2 \ cm = 0.02  \ m

The value of the spring constant of the spring is calculated by applying Hooke's law;

F = mg = k\Delta x\\\\k = \frac{mg}{\Delta x } \\\\k = \frac{0.03 \times 9.8}{0.02} \\\\k = 14.7 \ N/m

Learn more about Hooke's law here:brainly.com/question/4404276

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Therefore,   t = 2.0s, the angular momentum is

\boxed{ L= 2(4A+3B+2C+D)x. }

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