# Write down the equation of a pragressive wave of amplitude 0.02 m and period 0.05 s travelling along a streached string with a velocity 10 m/ sec

Khimraj
3007 Points
4 years ago
equation will y = Asin(wt - kx)
A = 0.02
T = 0.05
so w = 2$\pi$/T = 40$\pi$
v = 10
v = w/k
10 = 40$\pi$/k
so k = 4$\pi$
then
y = 0.02sin(40$\pi$t – 4$\pi$x)
Hope it clears.