Joy Ferreira
Last Activity: 6 Years ago
y1=Asin(w1t+π) {π because both particles are at extreme position} y2= Asinw2t since they are in same phase, y1=y2 Asin(w1t+π)=Asinw2t w1t +π=w2t π=w2t-w1t = 2πt/T1 -2πt/T2. π=2πt[1/T1 - 1/T2] . 1=2[1/3-1/7]t. = (2×4/21) t . 1=(8/21) t t=21/8