Physics - SHM Question with Solution | TestHub

Here, point of suspension has an acceleration.$\overrightarrow{\text{a}}$= g sin  θ (down the plane). Further,$\overrightarrow{\text{g}}$can be resolved into two components g sin  θ (along the plane) and g cos  θ (perpendicular to plane).


${\overrightarrow{\text{g}}}_{\text{eff}}=\overrightarrow{\text{g}}-\overrightarrow{\text{a}}$

= g cosθ (perpendicular to plane)

$\text{T}=2\text{π}\sqrt{\frac{l}{\left|{\overrightarrow{\text{g}}}_{\text{eff}}\right|}}$

$=2\text{π}\sqrt{\frac{l}{\text{g}\text{cos}\text{θ}}}$