A 20kg metal block is placed on a horizontal surface. The block just begins to slide when horizontal force of 100N is applied to
it (a) calculate The coefficient of static friction (b) if the coefficient of kinetic friction is 0.4 then find minimum force to maintain it's uniform motion
1 answer:
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Answer:
Time take to fill the standing wave to the entire length of the string is 1.3 sec.
Explanation:
Given :
The length of the one end
, frequency of the wave
= 2.3 Hz, wavelength of the wave λ = 1 m.
Standing wave is the example of the transverse wave, standing wave doesn't transfer energy in a medium.
We know,
∴ λ
Where speed of the standing wave.
also, ∴
where time take to fill entire length of the string.
Compare above both equation,
⇒
sec
Therefore, the time taken to fill entire length 0f the string is 1.3 sec.