Question

4. Identify and Apply Models A person's center of mass can be found by having the person lie on a reaction board. A horizontal, 3m-long, 6kg board is supported only at the ends, with one end resting on a block and the other resting on a scale. Mildred, who has a mass of 60 kg, lies on the board with her feet over the block. The scale reads 250 N. (a) Sketch an interaction diagram and a free body diagram for a system consisting of Mildred board. Do not treat the system as a point particle. That is, draw the forces where they act. Label forces using Fdealer feler notation with appropriate abbreviations. type (b) Calculate the force that the block exerts on the board. (c) Calculate the distance from the Mildred's feet to her center of mass by first writing an expression for the net torque around her feet.

Answer 1