Question

Which of the following functions represents a
simple harmonic oscillation?
(a) y = sin ⍵t – cos ⍵t
(b) y = sin ⍵t + sin 2⍵t
(c) y = sin ⍵t + cos 2⍵t
(d) y = sin²⍵t + sin ⍵t

Answer 1

Answer:

hey mate.......

...............................

functions represents a

simple harmonic oscillation

y = sin ⍵t – cos ⍵t...............

Answer 2

Answer:

sinωt−cosωt=

2

[

2

1

sinωt−

2

1

cosωt]

=

2

[cos

4

π

.sinωt−sin

4

π

cosωt]

=

2

sin(ωt−π/4) [which represents simple harmonic motion]