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larisa [96]
2 years ago
14

If it requires 8.0 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be re

quired to stretch it an additional 4.0 cm
Physics
1 answer:
Brums [2.3K]2 years ago
3 0
16 additional J of work
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The distance quantity/ measurement must be squared.
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A 2.6 kg mass attached to a light string rotates on a horizontal,
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The maximum speed the mass can have before it breaks is 2.27 m/s.

The given parameters:

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The maximum speed the mass can have before it breaks is calculated as follows;

T = ma_c\\\\Mg = \frac{Mv^2}{r} \\\\v^2 = rg\\\\v = \sqrt{rg} \\\\v_{max} = \sqrt{0.525 \times 9.8} \\\\v_{max} = 2.27 \ m/s

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A stationary siren emits sound of frequency 1000 Hz and wavelength 0.343 m. An observer who is moving toward the siren will meas
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f>1000Hz and wavelength=0.343 m

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We are given that

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When a observer is moving towards the siren then the frequency increases.

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But we are given that siren is stationary.

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