Question
Explain the international system of units. Explain its characteristics.
✓
Answer
self
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A progressive harmonic wave on a string is expressed as follow
$
y(x, t)=7.5 \sin (0.0050 x+12 t+\pi / 4)
$
(a) Find the speed at a point $x=1 cm$ on time $t=1$ sec. Is this speed is equal to the speed of wave propagation?
(b) Find the location of those points of the string whose tranverse displacement and speed are the same as that of the point located at $x=1 cm$ at times $t =2 s, 5 s$ and $11s.$
→$
y(x, t)=7.5 \sin (0.0050 x+12 t+\pi / 4)
$
(a) Find the speed at a point $x=1 cm$ on time $t=1$ sec. Is this speed is equal to the speed of wave propagation?
(b) Find the location of those points of the string whose tranverse displacement and speed are the same as that of the point located at $x=1 cm$ at times $t =2 s, 5 s$ and $11s.$
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A cylindrical log of wood of height $h$ and area of cross-section A floats in a liquid. It is pressed and then released. Show that the log would execute S.H.M. with a time period.
$
T=2 \pi \sqrt{\frac{m}{A \rho g}}
$
Where $m$ is mass of the body and $\rho$ is the density of the liquid.
→$
T=2 \pi \sqrt{\frac{m}{A \rho g}}
$
Where $m$ is mass of the body and $\rho$ is the density of the liquid.