Question bank/JEE Main/Physics

Find out velocity of block B in the given figure: (all the
pulleys are ideal and string are inextensible massless)

A$80\ m/s\ \widehat{j}$B$- 40\ m/s$C$0\ m/s\ \widehat{j}$D$- 80\ m/s\ \widehat{j}$

Show answer and solution▾

$\mathcal{l}_{1}^{'} + \mathcal{l}_{2}^{'} = 0$
$x = 4$`<!- ->`0
$\mathcal{l}_{3}^{'} + \mathcal{l}_{4}^{'} = 0$
$40 - y + 40 - 80 = 0$
$y = 0$

Source: Grass-G / P-06 Physics paper 14 October.docx