A sinusoidal harmonic wave is propagating along a string stretched along x – axis. A particle on the string at x = 1 m is found to be at its mean position travelling in positive y direction at t = 1 s. The amplitude, wavelength and frequency of the wave are 0.01 m, pi/2m and 20 Hz respectively. Write the equation of the wave if- (a) it is travelling along negative X direction (b) it is travelling along positive X direction.

A sinusoidal harmonic wave is propagating along a string stretched alo

1.	A sinusoidal harmonic wave is propagating along a string stretched along x – axis. A particle on the string at x = 1 m is found to be at its mean position travelling in positive y direction at t = 1 s. The amplitude, wavelength and frequency of the wave are 0.01 m, pi/2m and 20 Hz respectively. Write the equation of the wave if- (a) it is travelling along negative X direction (b) it is travelling along positive X direction.
Answer» Answer :(a) `y=0.01 sin [40 PI (t-1)+4(x-1)]` (B) `y=0.01 sin [40 pi (t-1)-4(x-1)]`