3. A particle moves in x - y plane according to the rule, x = Asinwt a...
The Motion of a Particle in the x-y Plane
The motion of a particle in the x-y plane can be described by two equations: x = Asin(ωt) and y = Acos(ωt + π/2), where A represents the amplitude of motion, ω is the angular frequency, and t is the time. Let's break down the given equations and understand the motion of the particle in detail.
Equation for x:
The equation x = Asin(ωt) represents the motion of the particle along the x-axis. Here are the key points related to this equation:
- Amplitude (A): The amplitude A determines the maximum displacement of the particle from its equilibrium position on the x-axis. It is the distance between the maximum and minimum values of x.
- Angular frequency (ω): The angular frequency ω determines the rate at which the particle oscillates along the x-axis. It is related to the time period T of the motion by the equation ω = 2π/T, where T is the time taken for one complete oscillation.
- Time (t): The variable t represents the time at which we want to determine the position of the particle along the x-axis.
Equation for y:
The equation y = Acos(ωt + π/2) represents the motion of the particle along the y-axis. Here are the key points related to this equation:
- Amplitude (A): Similar to the x-equation, the amplitude A determines the maximum displacement of the particle from its equilibrium position on the y-axis.
- Angular frequency (ω): The angular frequency ω determines the rate at which the particle oscillates along the y-axis. It is the same as the angular frequency in the x-equation.
- Time (t): The variable t represents the time at which we want to determine the position of the particle along the y-axis.
Motion of the Particle:
By simultaneously solving the equations for x and y, we can determine the position of the particle at any given time. The particle moves in a circular path in the x-y plane, with its center at the origin (0, 0). Here are some key points regarding the motion of the particle:
- Circular Path: The particle moves in a circular path due to the sinusoidal nature of the x and y equations. The radius of the circular path is equal to the amplitude A.
- Phase Difference: The phase difference between the x and y equations determines the initial position of the particle on the circular path. In this case, the phase difference is π/2, which means the particle starts from the maximum value of y when x is at its equilibrium position.
- Time Period: The time period T of the motion is the time taken for one complete revolution of the particle along the circular path. It can be calculated using the formula T = 2π/ω, where ω is the angular frequency.
In conclusion, the given equations describe the motion of a particle in the x-y plane. The particle moves in a circular path with its center at the origin. The position of the particle at any given time can be determined by solving the equations for x and y simultaneously. The amplitude, angular frequency, and phase difference determine the characteristics of the motion, such as the radius of the circular path and the initial position of the particle.
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