চিত্র হতে, T=?T=?T=?
T=Ra(l+a)T=\frac{R}{a}\left(l+a\right) T=aR(l+a)
T=wa(l+a)T=\frac{w}{a}\sqrt{\left(l+a\right)} T=aw(l+a)
T=RlaT=\frac{Rl}{a} T=aRl
None
Tsin90°=Rsin(90+∠AOB)⇒T=Rcos∠AOB⇒T=ROBAO =R(l+a)a\frac {T}{sin90°}=\frac{R}{sin(90+∠AOB)}⇒T=\frac{R}{cos∠AOB} \Rightarrow T=\frac{R}{\frac{OB}{AO}\ }=\frac{R\left(l+a\right)}{a} sin90°T=sin(90+∠AOB)R⇒T=cos∠AOBR⇒T=AOOB R=aR(l+a)
