A) \[\frac{\sqrt{2}}{5}m\]
B) \[\frac{1}{\sqrt{3}}m\]
C) \[\frac{5}{\sqrt{2}}m\]
D) \[\frac{1}{2}m\]
Correct Answer: C
Solution :
[c] Given \[t=1s\] \[\therefore \,\,x=5\cos \left( 2\pi +\frac{\pi }{4} \right)=5\cos \,\frac{\pi }{4}=\frac{5}{\sqrt{2}}m\] i.e., displacement at \[t=1\,s\,is\,\frac{5}{\sqrt{2}}m\]
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