Question

8
The two simple harmonic motion are represented by
Y = 5Sin cos(wt+π/2) and Y, = -12 Cos(wt). The resultant amplitude of simple harmonic motion will
be:
(1)7
(2) 13
3) 12
(4) √5 +√12​

Answer 1

Resultant amplitude of two SHM wave will be,

$\sqrt{a1 {}^{2} + a2 {}^{2} }$

$\sqrt{5 { }^{2} + 12 { }^{2} }$

√25+144=✓169 = 13

ans - 2) 13