Block A, with a mass of 50 kg, rests on a horizontal table top.The coefficient of static friction is 0.40.A horizontal string is attached to A and passes over a massless, frictionless pulley as shown.The smallest mass mB of block B, attached to the dangling end, that will start A moving when it is attached to the other end of the string is: 
Definitions:
Social Role
The part individuals play in society as dictated by norms, expectations, and responsibilities associated with their position or status.
Internalization
The process of integrating beliefs, values, standards, and norms from external sources into one's own psychological structure.
Psychological System
A complex network within an individual that encompasses cognitive, emotional, and behavioral processes.
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