Question

Two collinear harmonic osscillation are made to superpose.if their displacement are represent as
X1=2acoswt and X2=3 cos wt.
calculate the amplitude of the resultant oscillation when the phase difference is
1.
$2\pi$
2.
$0$
3.
$\pi \div 2$
4.
$\pi$

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Answer 1

Explanation:

Refer to the attachment mate!