SLE onment To get up on the roof, a person (mass 70.0 kg) places a 5.00 m aluminum ladder (mass 11.5 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. The ladder rests against a plastic rain gutter, which we can assume to be frictionless. The center of mass of the ladder is 2.00 m (along the length of the ladder) from the bottom. The person is standing 2.50 m (along the length of the ladder) from the bottom. What are the magnitudes of the forces on the ladder at the top and bottom? Part 1 + Identify the contact force(s) acting on the top of the ladder: the normal force Correct answer, well done. Marks for this submission: 0.000/0.000. Identify the contact force(s) acting on the bottom of the ladder: the normal force and friction + Correct answer, well done. Marks for this submission: 0.000/0.000. Part 2 What is the magnitude of the net force the rain gutter applies to the top of the ladder? 170 N * Incorrect answer. Marks for this submission: 0.000/0.000. Part 3 What is the magnitude of the net force the concrete pad applies to the bottom of the ladder? 817 N * Incorrect answer. Marks for this submission: 0.000/0.000