Page 42 - SP015 Past Years PSPM Chapter 6 -14 Ver 2020

PHYSICS PSPM SEM 1 1999 - 2017

PSPM 2001/2002 SF015/2 No. 5

5. A progressive wave equation is given by y = 3 sin (8t + 0.4x) cm. Determine
(a) the velocity of the wave particle v y. [1 m]
(b) the acceleration of the wave particle a y. [1 m]
(c) the speed of wave v. [2 m]

PSPM 2001/2002 SF015/2 No. 12(a)(ii)

6. A sinusoidal progressive wave moving to the right has displacement, y that equals
minimum displacement at time t = 0 s for x = 0 m. Write an equation of progressive
wave motion in terms of period T and wavelength  . [4 m]

PSPM 2001/2002 SF015/2 No. 12(b)

7. displacement, y
(cm)
A

0 time, t (s)

–A
FIGURE 10.1

FIGURE 10.1 shows a progressive wave profile, y which propagates with maximum
displacement, A and angular frequency, 
.
(a) Write the wave motion equation. [1 m]
(b) If a wave y 1 lags y with a phase angle of /2 rad, write the wave motion equation
for y 1. Copy FIGURE 10.1 and sketch the wave profile for y 1.
[2 m]

PSPM 2001/2002 SF015/2 No. 12(c)(i)

8. A progressive wave propagates along a string to the positive-x direction at a speed of
-1
1100 m s . If the maximum displacement is 0.5 m and does 25 cycles per second,
determine wavelength, angular frequency, and wave number. [3 m]

PSPM 2003/2004 SF017/2 No. 12(a)(i)

9. State two important properties of progressive wave. [2 m]

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