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Karo-lina-s [1.5K]
3 years ago
13

How much force is needed to accelerate a 20 kg mass at a rate of 4 m/s to the second power?

Physics
2 answers:
LekaFEV [45]3 years ago
8 0

Answer:

80 N

Explanation:

mass (m) = 20kg

acceleration (a) = 4m/s^2

Force (F) = ?

.°. F = ma

= 20 × 4 = 80

.°. F = 80 N

Thus, The Force is needed to accelerate a 20 kg mass at a rate of 4 m/s^2 is 80 N

-TheUnknownScientist

dusya [7]3 years ago
6 0

Answer:

So 55 Newtons are needed.

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If y = 0.02 sin (30x – 200t) (SI units), the frequency of the wave is
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Answer:

31.831 Hz.

Explanation:

<u>Given:</u>

  • \rm y = 0.02\sin(30x-200 t).

The vertical displacement of a wave is given in generalized form as

\rm y = A\sin(kx -\omega t).

<em>where</em>,

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  • k = wave number of the wave = \dfrac{2\pi }{\lambda}.
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  • x = horizontal displacement of the wave.
  • \omega = angular frequency of the wave = \rm 2\pi f.
  • f = frequency of the wave.
  • t = time at which the displacement is calculated.

On comparing the generalized equation with the given equation of the displacement of the wave, we get,

\rm A=0.02.\\k=30.\\\omega =200.\\

therefore,

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A machine is currently set to a feed rate of 5.921 inches per minute (IPM). Te machinist changes this setting to 6.088 IPM. By h
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By 16.7% or 0.167 IPM

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the speed of the waves is 150 cm/s

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Given;

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L = 2(Node to Node) = (4 Nodes) = 2 (λ/2) = λ

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Therefore, the speed of the waves is 150 cm/s

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