Year: 2015
Topic: Waves
Time :
1. When two displacements represented by \(y_1\,=\, a\, sin\, \left(\omega\,t\right)\) and \(y_2\,=\, b\, cos\, \left(\omega\,t\right)\)are superimposed the motion is:
(1). not a simple harmonic
(2). simple harmonic with amplitude \(\displaystyle \frac{a}{b}\)
(3). simple harmonic with amplitude \(\displaystyle \sqrt{a^2\,+\,b^2}\)
(4). simple harmonic with amplitude \(\displaystyle \frac{\left(a\,+\,b\right)}{2}\)