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The amplitude and the periodic time of a SHM are 5cm5cm and 6s6s respectively. At a distance of 2.5cm2.5cm away from the mean position, the phase will be

হানি নাটস

The equation of motion is given as

y=5sin2πt6y=5\sin { \cfrac { 2\pi t }{ 6 } }

Here, y=2.5cmy=2.5cm

2.5=5sin2πt6\therefore 2.5=5\sin { \cfrac { 2\pi t }{ 6 } }

π6=2πt6t=12s\Rightarrow \cfrac { \pi }{ 6 } =\cfrac { 2\pi t }{ 6 } \Rightarrow t=\cfrac { 1 }{ 2 } s

\therefore The phase =2πt6=2π6×12=π6=\cfrac { 2\pi t }{ 6 } =\cfrac { 2\pi }{ 6 } \times \cfrac { 1 }{ 2 } =\cfrac { \pi }{ 6 }

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