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In the system shown in Figure, the pulley is frictionless and the string mass less. if m1m2, thrust on the pulley is:

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a
less than (m1 + m2) g
b
greater than (m1 + m2) g
c
equal to (m1 + m2) g
d
none of the above

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detailed solution

Correct option is A

As m1≠m2 so thrust on the pulley 2T=4m1m2m1+m2gwhich is. less than (m1 + m2) g.


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A constant force F = m2g/2 is applied on the block of mass m1 as shown. The string and the pulley are light and the surface of the table is smooth. Find the acceleration of m1.


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