Question

The system shown in figure is released from rest. After blocks have moved distance h/3, collar 'B' is removed and block A & C continue to move. Speed of C before it hits ground is –

• A. $\frac { 4 } { 3 } \sqrt { \mathrm { gH } }$
• B. $2 \sqrt { \frac { \mathrm { gH } } { 3 } }$
• C. $\frac { \sqrt { 13 \mathrm { gH } } } { 3 }$
• D. $2 \sqrt { 2 \mathrm { gH } }$

Answer 1

Answer: (C)

$\frac { \sqrt { 13 \mathrm { gH } } } { 3 }$

Answer 2

V² = $V _ { \mathrm { C } } ^ { 2 }$ + 2. $\frac { \mathrm { g } } { 2 }$ . H

= $\frac { 4 \mathrm { gH } } { 3 }$ + 2gH

\ V = $\frac { \sqrt { 13 \mathrm { gH } } } { 3 }$