A stepladder of negligible weight is constructed as shown in Figure P12.57. A painter of mass 70.0 kg stands on the ladder 3.00 m from the bottom. Assuming the floor is frictionless, find
(a) The tension in the horizontal bar connecting the two halves of the ladder,
(b) The normal forces at A and B, and
(c) The components of the reaction force at the single hinge C that the left half of the ladder exerts on the right half. (Suggestion: Treat the ladder as a single object, but also each half of the ladder separately.) |
New search. (Also 5349 free access solutions) |