Questions
A particle starts its SHM on a line at initial phase of .It reaches again the point of start after time t. lt crosses yet another point P on the same line at successive intervals 2t and 3t respectively. Find the amplitude of the motion, if the particle crosses the point of start at speed 2 m/s:
detailed solution
Correct option is A
x=Asinω×0+π6=Asinπ6=A2 (t=0 at initial phase )Let time t=0 is considered from point Q where displacement =A/2 Time period T=tQA+tAQ+tQP+tPQ+tPB+tBP=t+[(2t−t)+(2t−t)]+t=4t=2π/ωω=π/2t;x=Asinωt+π6dxdt=Aωcosωt+π6=Aωcosπ2+π62=A×π2t×12 ( sign not considered );A=8tπTalk to our academic expert!
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