How does the long shape of submarines and torpedoes reduce the dragthey feel when moving under water?
1 answer:
In the front side of the submarines and torpedoes, the small area of contact is maintained to reduce the pressure or the drag force on the submarines due to the water.
The drag force in terms of the area of cross-section of the submarine is,
where F_d is the drag force acting on the submarine and A is the area of cross-section of a submarine in contact with the water,
There is also piped formation that takes place through which the water runs lengthwise while the submarine is moving in the forward direction, thus, reduces the force on the submarine due to the water.
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The maximum kinetic energy, maximum potential energy and the maximum mechanical energy are equal to 7.56J.
<h3>What is simple harmonic motion?</h3>Simple harmonic motion, in physics, repetitive movement back and forth through an equilibrium, or central, position, so that the maximum displacement on one side of this position is equal to the maximum displacement on the other side.
Simple Harmonic Motion
The given equation of the simple harmonic motion is
Data;
ω = π/2
k = 1.254N/m
Solving this
Let's calculate the maximum velocity.
This is only possible when cos θ = -1
The maximum kinetic energy is
Using the value of spring constant, we can find the maximum potential energy.
The maximum potential energy is 7.56J
The maximum mechanical energy is equal to the sum of maximum potential energy and the maximum kinetic energy.
ME = K.E + P.E
ME = 7.56J
From the calculations above, the maximum kinetic energy, maximum potential energy and the maximum mechanical energy are equal to 7.56J.
Learn more on simple harmonic motion here;
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