Change set
Pick exam & year, then Go.
Question map
Motion of a particle can be described in x-direction by x = 1 sin (ot, and y-direction by y = b cos cot. The particle is moving on
Explanation
The motion of the particle is described by the parametric equations x = a sin ωt and y = b cos ωt. To determine the path, we eliminate the time parameter 't' by rearranging the equations as x/a = sin ωt and y/b = cos ωt. Squaring and adding these equations yields (x/a)² + (y/b)² = sin² ωt + cos² ωt. Since sin² θ + cos² θ = 1, the resulting equation is (x²/a²) + (y²/b²) = 1. This is the standard mathematical equation for an ellipse centered at the origin [1]. These curves are known as Lissajous figures, which result from the superposition of two mutually perpendicular simple harmonic motions [1]. While the path becomes a circle if the amplitudes 'a' and 'b' are equal, in the general case where 'a' and 'b' are distinct, the particle follows an elliptical path [1].
Sources
- [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 2: The Solar System > Kepler's Laws of Planetary Motion > p. 21
SIMILAR QUESTIONS
The simple harmonic motion of a particle is given by y = 3 sing co t + 4 cos co t. Which one of the following is the amplitude of such motion?
The position vector of a particle is given by r = 2t²î + 3tĵ + 4k̂. Then the instantaneous velocity v and acceleration a respectively lie:
- (A) on the xy-plane and along the z-direction
- (B) on the xz-plane and along the x-direction
- (C) on the yz-plane and along the x-direction
- (D) on the xy-plane and along the x-direction