Question: A worker is raising a 9.2-m-long ladder of mass 53 kg as shown. Knowing that the force exerted by the worker is perpendicular to the

A worker is raising a 9.2-m-long ladder of mass 53 kg as shown. Knowing that the force exerted by the worker is perpendicular to the ladder, determine

(a) The smallest value of a for which the vertical component of the reaction at B is zero,

(b) The corresponding force exerted by the worker.

1.75 m

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