Two masses A and B are connected with two inextensible string to write constraint relation between ${\mathrm{v}}_{\mathrm{A}}$ and ${\mathrm{v}}_{\mathrm{B}}$
Student A:${\mathrm{v}}_{\mathrm{A}}\cos \theta ={\mathrm{v}}_{\mathrm{B}}$
Student B: ${\mathrm{v}}_{\mathrm{B}}\cos \theta ={\mathrm{v}}_{\mathrm{A}}$

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