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Rotational Equilibrium and Newton's First Law Practice Test
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Q1
A uniform ladder of mass $$m$$ and length $$L$$ leans against a perfectly smooth (frictionless) vertical wall at an angle $$\theta$$ with the horizontal floor. The floor is rough and provides a static friction force that prevents the ladder from slipping.
Which expression represents the magnitude of the torque produced by the wall's normal force ($$N_w$$) about the point where the ladder contacts the floor?
Which expression represents the magnitude of the torque produced by the wall's normal force ($$N_w$$) about the point where the ladder contacts the floor?