Question

Two masses of 4 kg and 5 kg are connected by a string passing through a frictionless pulley and are kept on a frictionless table as shown in the figure. The acceleration of 5 kg mass is

• A. $49 m / s ^ { 2 }$
• B. $5.44 \mathrm {~m} / \mathrm { s } ^ { 2 }$
• C.
• D. $2.72 \mathrm {~m} / \mathrm { s } ^ { 2 }$

Answer 1

Answer: (B)

$5.44 \mathrm {~m} / \mathrm { s } ^ { 2 }$

Answer 2

$a = \frac { m _ { 2 } } { m _ { 1 } + m _ { 2 } } \times g = \frac { 5 } { 4 + 5 } \times 9.8 = \frac { 49 } { 9 } = 5.44 \mathrm {~m} / \mathrm { s } ^ { 2 }$