Question 11 A ladder of length 10 m and mass 20 kg (and with a uniform mass distribution) leans against a slippery vertical wall. The ladder makes an angle of 30° with respect to the vertical. Friction between the ladder and the ground prevents it from sliding downwards. What is the magnitude of the force exerted on the ladder by the wall? (a) 0 N (b) 0.57 N (c) 5.7 N (d) 57 N
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- The weight of the ladder (W) acts downward at its center of mass. - The normal force (N) from the ground acts upward at the base of the ladder. - The frictional force (f) from the ground acts horizontally at the base of the ladder. - The normal force from the Show more…
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