Physics - NLM Question with Solution | TestHub

Block A is moving with a speed of 20 m/s in +x direction and block B is moving with v m/s in +x direction using virtual work method we have $\Sigma \mathrm{T}.\mathrm{V}=0$ [in x-direction] $-\mathrm{T}\times 20+\mathrm{T}\cos 37^{\circ }\times \mathrm{V}=0$

$\mathrm{T}\times \frac{4}{5}\times \mathrm{v}=\mathrm{T}\times 20$

$\mathrm{v}=25\mathrm{m}/\mathrm{s}$.......(A)