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The equation of a simple harmonic wave i...

The equation of a simple harmonic wave is given by
`y = 3 sin"(pi)/(2) (50t - x)`
where `x` and `y` are in meters and `x` is in second .The ratio of maximum particle velocity to the wave velocity is

A

`(3)/(2)pi`

B

`3pi`

C

`(2)/(3)pi`

D

`2pi`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to find the ratio of the maximum particle velocity to the wave velocity for the given wave equation: ### Step-by-Step Solution: 1. **Identify the wave equation**: The given wave equation is: \[ y = 3 \sin\left(\frac{\pi}{2}(50t - x)\right) \] Here, \( A = 3 \) (amplitude), \( \omega = \frac{\pi}{2} \cdot 50 = 25\pi \) (angular frequency), and \( k = \frac{\pi}{2} \) (wave number). 2. **Calculate the maximum particle velocity**: The particle velocity \( v_p \) is given by the partial derivative of \( y \) with respect to time \( t \): \[ v_p = \frac{dy}{dt} = 3 \cdot \frac{d}{dt} \left(\sin(25\pi t - \frac{\pi}{2} x)\right) \] Using the chain rule, we have: \[ v_p = 3 \cdot 25\pi \cos(25\pi t - \frac{\pi}{2} x) \] The maximum particle velocity occurs when \( \cos(25\pi t - \frac{\pi}{2} x) = 1 \): \[ v_{p, \text{max}} = 3 \cdot 25\pi = 75\pi \, \text{m/s} \] 3. **Calculate the wave velocity**: The wave velocity \( v_w \) is given by the formula: \[ v_w = \frac{\omega}{k} \] Substituting the values of \( \omega \) and \( k \): \[ v_w = \frac{25\pi}{\frac{\pi}{2}} = 25\pi \cdot \frac{2}{\pi} = 50 \, \text{m/s} \] 4. **Find the ratio of maximum particle velocity to wave velocity**: Now, we can find the ratio: \[ \text{Ratio} = \frac{v_{p, \text{max}}}{v_w} = \frac{75\pi}{50} = \frac{3\pi}{2} \] ### Final Answer: The ratio of maximum particle velocity to wave velocity is: \[ \frac{3\pi}{2} \]

To solve the problem, we need to find the ratio of the maximum particle velocity to the wave velocity for the given wave equation: ### Step-by-Step Solution: 1. **Identify the wave equation**: The given wave equation is: \[ y = 3 \sin\left(\frac{\pi}{2}(50t - x)\right) ...
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