Question

A source of sound having frequency 2000Hr & a receiver are located at the same point at the instant t = 0, the source starts moving with const. $ac{c}^n(a=10m/s^2)$.
Find the frequency registered by the receiver at the instant t = 10sr. Velocity of sound in air is 340 m/s.

Answer 1

From-
$v=u+at$
$v_s=0+10\times 10$
$v_s=100m/s$
From the formula-
$f^{\prime }=f\left(\frac{v}{v+v_s}\right)$
$f^{\prime }=2000\left(\frac{340}{340+100}\right)$
$f^{\prime }=1545.45$