First slide

Connected bodies

Question

In the system shown in Figure, the pulley is frictionless and the string mass less. if $m_{1} \neq m_{2}$ , thrust on the pulley is:

Easy

A

less than (m₁ + m₂) g
B

greater than (m₁ + m₂) g
C

equal to (m₁ + m₂) g
D

none of the above

Solution

As $m_{1} \neq m_{2}$ so thrust on the pulley $2 T = (\frac{4 m_{1} m_{2}}{m_{1} + m_{2}}) g$
which is. less than (m₁ + m₂) g.

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