Hi there, I would like to know that if we have an leaning object supported by another object, both are supported by ground floor to satisfy static equilibrium condition, does the reaction force at the contact point produce cancelling torque (for the leaning object)? In general, can a reaction force produce torque? If so, is the torque equal to moment arm that is from pivot point to the point the reaction force acting, cross product to the reaction force?
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