Question

A small piece of cork in a ripple tank oscillates up and down as ripples pass it. If the ripples travelling at 0.3 m/s have a wavelength of 1.5 π cm and the cork vibrates with an amplitude of 5 mm, the maximum velocity of the cork is –

• A. 20 cm/sec
• B. 20 m/sec
• C. 0.02 m/sec
• D. 200 cm/sec

Answer 1

Answer: (A)

20 cm/sec

Answer 2

(v_P)_max = Aω,

= 2πn = 2π . $\frac{v}{\lambda}$ = 2π × $\frac{0.3}{1.5\pi \times 10^{- 2}}$