A student is using a frequency generator set to 440 Hz. Another student has an identical generator playing an unknown frequency.
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The simple pendulum concept and rotational kinematics relationships allow finding the result for the velocity relationship
- The shortest pendulum (w₁) has more speed than the longest pendulum (w₂)
w₁ = w₂
The simple harmonic movement is a periodic movement where the restoring force is proportional to the elongation, in the case of the simple pendulum it is fulfilled for angles less than 10º. The expression for motion is
θ = θ₀ cos ωt
ω² = g / l
the angular velocity is defined by
w =
w = - θ₀ ω sin ωt
Where θ₀ is the initial angle or amplitude, w is the angular velocity, t the time, g the acceleration of gravity and l the length of the pendulum
Let's find the angular velocity for each pendulum
ω ₁ =
Indicate that the second pendulum length is
l₂ = 2 l₁
ω₂ =
the pendulum speed is maximum at the lowest point of the trajectory that occurs when the sine function has its maximum value
w = θ₀ω
Suppose that the two pendulums are released with the same initial angle
Pendulum 1
w₁ = θ₀
Pendulum 2
w₂ = θ₀
We look for the relationship between the two speeds
In conclusion, using the simple pendulum concept and the rotational kinematics relations we can find the result for the velocity relation
- The shortest pendulum (w₁) has more speed than the longest pendulum (w₂)
w₁ = √2 w₂
Learn more here: brainly.com/question/24159297
The height, h, of the water level in the tank is mathematically given as
h=1.3675
<h3>What is the height, h, of the water level in the tank?</h3>Generally, the equation for kinematics is mathematically given as
S=v_o t+(1/2)at^2
Therefore
y=0+(1/2)gt^2
Where
t=(2y/g)^{1/2}
t=(2*1.72/9.8)^{1/2}
t=0.5925s
The horizontal exit velocity will be given as
Therefore
Vx=0.5283
In conclusion, applying Bernoulli's Law the tank bottom and tank surface
P+(1/2)pv0^2+pgh=P+(1/2)pvx^2+pgh
(1/2)(p)(0m/s)^2+pgh=(1/2)pvx^2+pg(0m)
gh=(1/2)vx^2
h=(0.5283m/s)^2/(2)(9.8)
h=1.3675
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